162 files changed, 53 insertions, 426 deletions

diff --git a/keyboards/1upkeyboards/1up60rgb/config.h b/keyboards/1upkeyboards/1up60rgb/config.h
index bfdf354af..ee49211b4 100644
--- a/keyboards/1upkeyboards/1up60rgb/config.h
+++ b/keyboards/1upkeyboards/1up60rgb/config.h
@@ -43,9 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN E2
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
diff --git a/keyboards/1upkeyboards/sweet16/config.h b/keyboards/1upkeyboards/sweet16/config.h
index 77d9e276d..20d99651d 100644
--- a/keyboards/1upkeyboards/sweet16/config.h
+++ b/keyboards/1upkeyboards/sweet16/config.h
@@ -9,7 +9,7 @@
 #define DEVICE_VER      0x0001
 #define MANUFACTURER    1up Keyboards
 #define PRODUCT         Sweet16
-#define DESCRIPTION     4x4 grid 
+#define DESCRIPTION     4x4 grid
 
 /* key matrix size */
 #define MATRIX_ROWS 4
@@ -43,9 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN B1
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
@@ -55,4 +52,4 @@
 #define RGBLIGHT_VAL_STEP 8
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/acr60/config.h b/keyboards/acr60/config.h
index c44ba737e..3066f349d 100644
--- a/keyboards/acr60/config.h
+++ b/keyboards/acr60/config.h
@@ -41,9 +41,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN E2
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 20
diff --git a/keyboards/alf/x2/config.h b/keyboards/alf/x2/config.h
index 31212ce33..f2106fa88 100644
--- a/keyboards/alf/x2/config.h
+++ b/keyboards/alf/x2/config.h
@@ -43,9 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN E2
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
@@ -55,4 +52,4 @@
 #define RGBLIGHT_VAL_STEP 8
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/alpha/config.h b/keyboards/alpha/config.h
index 029527563..1e16f5ca3 100755
--- a/keyboards/alpha/config.h
+++ b/keyboards/alpha/config.h
@@ -43,8 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
 
 #define RGB_DI_PIN F4
 #ifdef RGB_DI_PIN
diff --git a/keyboards/alu84/config.h b/keyboards/alu84/config.h
index 9e013dbcc..9d2dca409 100755
--- a/keyboards/alu84/config.h
+++ b/keyboards/alu84/config.h
@@ -59,9 +59,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN E2
 #ifdef RGB_DI_PIN
 #define RGBLED_NUM 16
diff --git a/keyboards/at101_blackheart/config.h b/keyboards/at101_blackheart/config.h
index 6a809a02f..237cb095e 100644
--- a/keyboards/at101_blackheart/config.h
+++ b/keyboards/at101_blackheart/config.h
@@ -38,6 +38,3 @@
 #define IS_COMMAND() ( \
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
-
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
\ No newline at end of file
diff --git a/keyboards/atreus/keymaps/jeremy/keymap.c b/keyboards/atreus/keymaps/jeremy/keymap.c
index 42bef9d80..890980f41 100644
--- a/keyboards/atreus/keymaps/jeremy/keymap.c
+++ b/keyboards/atreus/keymaps/jeremy/keymap.c
@@ -4,8 +4,6 @@
 #include "action_layer.h"
 #include "keymap_colemak.h"
 
-#define PREVENT_STUCK_MODIFIERS
-
 // Each layer gets a name for readability, which is then used in the keymap matrix below.
 #define ALPH 0
 #define NUMS 1
diff --git a/keyboards/atreus/keymaps/khitsule/config.h b/keyboards/atreus/keymaps/khitsule/config.h
index 19714ec7d..c74909a9f 100644
--- a/keyboards/atreus/keymaps/khitsule/config.h
+++ b/keyboards/atreus/keymaps/khitsule/config.h
@@ -3,8 +3,6 @@
 
 #include "../../config.h"
 
-#define PREVENT_STUCK_MODIFIERS
-
 #define IGNORE_MOD_TAP_INTERRUPT
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/atreus/keymaps/xk/config.h b/keyboards/atreus/keymaps/xk/config.h
index 2f8110167..a8b9c8805 100644
--- a/keyboards/atreus/keymaps/xk/config.h
+++ b/keyboards/atreus/keymaps/xk/config.h
@@ -30,8 +30,7 @@ the Free Software Foundation, either version 2 of the License, or
 #define MOUSEKEY_WHEEL_MAX_SPEED   8
 #define MOUSEKEY_WHEEL_TIME_TO_MAX 40
 
-#define PREVENT_STUCK_MODIFIERS
 #define IGNORE_MOD_TAP_INTERRUPT
 #define PERMISSIVE_HOLD
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/atreus62/keymaps/mneme/config.h b/keyboards/atreus62/keymaps/mneme/config.h
index 73eb0fa33..a89bf5503 100644
--- a/keyboards/atreus62/keymaps/mneme/config.h
+++ b/keyboards/atreus62/keymaps/mneme/config.h
@@ -1,6 +1,5 @@
 #define ONESHOT_TIMEOUT 3000
 #define TAPPING_TERM 200
-#define PREVENT_STUCK_MODIFIERS
 #define FORCE_NKRO
 #define LEADER_TIMEOUT 1000
 
diff --git a/keyboards/atreus62/keymaps/mneme/rules.mk b/keyboards/atreus62/keymaps/mneme/rules.mk
index 046aec273..160ce6edb 100644
--- a/keyboards/atreus62/keymaps/mneme/rules.mk
+++ b/keyboards/atreus62/keymaps/mneme/rules.mk
@@ -3,3 +3,4 @@ NKRO_ENABLE = true
 MOUSEKEY_ENABLE = no
 EXTRAKEY_ENABLE = yes
 CONSOLE_ENABLE = no
+LEADER_ENABLE = yes
diff --git a/keyboards/bfo9000/keymaps/andylikescandy6x18/config.h b/keyboards/bfo9000/keymaps/andylikescandy6x18/config.h
index 9d124a98e..be57e385e 100644
--- a/keyboards/bfo9000/keymaps/andylikescandy6x18/config.h
+++ b/keyboards/bfo9000/keymaps/andylikescandy6x18/config.h
@@ -37,7 +37,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
  #define PERMISSIVE_HOLD
 
- #define PREVENT_STUCK_MODIFIERS
-
-
 #endif
diff --git a/keyboards/bigseries/1key/config.h b/keyboards/bigseries/1key/config.h
index 4e30276fc..966f2062c 100755
--- a/keyboards/bigseries/1key/config.h
+++ b/keyboards/bigseries/1key/config.h
@@ -47,9 +47,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     false \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #ifdef RGBLIGHT_ENABLE
 #define RGB_DI_PIN D3
 #define RGBLIGHT_ANIMATIONS
diff --git a/keyboards/bigseries/2key/config.h b/keyboards/bigseries/2key/config.h
index 83c8e3141..79b9ed378 100755
--- a/keyboards/bigseries/2key/config.h
+++ b/keyboards/bigseries/2key/config.h
@@ -47,9 +47,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     false \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #ifdef RGBLIGHT_ENABLE
 #define RGB_DI_PIN D3
 #define RGBLIGHT_ANIMATIONS
diff --git a/keyboards/bigseries/3key/config.h b/keyboards/bigseries/3key/config.h
index e10b14db4..9963a8219 100755
--- a/keyboards/bigseries/3key/config.h
+++ b/keyboards/bigseries/3key/config.h
@@ -47,9 +47,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     false \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #ifdef RGBLIGHT_ENABLE
 #define RGB_DI_PIN D3
 #define RGBLIGHT_ANIMATIONS
diff --git a/keyboards/bigseries/4key/config.h b/keyboards/bigseries/4key/config.h
index 3ebcfe091..a222512d3 100755
--- a/keyboards/bigseries/4key/config.h
+++ b/keyboards/bigseries/4key/config.h
@@ -47,9 +47,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     false \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #ifdef RGBLIGHT_ENABLE
 #define RGB_DI_PIN D3
 #define RGBLIGHT_ANIMATIONS
diff --git a/keyboards/bigswitch/config.h b/keyboards/bigswitch/config.h
index cc290fd79..a0ef6b555 100755
--- a/keyboards/bigswitch/config.h
+++ b/keyboards/bigswitch/config.h
@@ -47,8 +47,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     false \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
 
 #ifdef RGBLIGHT_ENABLE
 #define RGB_DI_PIN D3
diff --git a/keyboards/catch22/config.h b/keyboards/catch22/config.h
index cb7ca7d84..f151e7048 100644
--- a/keyboards/catch22/config.h
+++ b/keyboards/catch22/config.h
@@ -46,9 +46,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     false \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #ifdef RGBLIGHT_ENABLE
 #define RGB_DI_PIN F6
 #define RGBLIGHT_ANIMATIONS
diff --git a/keyboards/chimera_ergo/config.h b/keyboards/chimera_ergo/config.h
index 86ee23718..8ce195cc0 100644
--- a/keyboards/chimera_ergo/config.h
+++ b/keyboards/chimera_ergo/config.h
@@ -52,8 +52,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *  These options are also useful to firmware size reduction.
  */
 
-#define PREVENT_STUCK_MODIFIERS
-
 /* disable debug print */
 //#define NO_DEBUG
 
diff --git a/keyboards/chimera_ls/config.h b/keyboards/chimera_ls/config.h
index d92878026..254dad306 100644
--- a/keyboards/chimera_ls/config.h
+++ b/keyboards/chimera_ls/config.h
@@ -52,8 +52,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *  These options are also useful to firmware size reduction.
  */
 
-#define PREVENT_STUCK_MODIFIERS
-
 /* disable debug print */
 //#define NO_DEBUG
 
diff --git a/keyboards/chimera_ortho/config.h b/keyboards/chimera_ortho/config.h
index 44c6212b1..4bf85eb88 100644
--- a/keyboards/chimera_ortho/config.h
+++ b/keyboards/chimera_ortho/config.h
@@ -52,8 +52,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *  These options are also useful to firmware size reduction.
  */
 
-#define PREVENT_STUCK_MODIFIERS
-
 /* disable debug print */
 //#define NO_DEBUG
 
diff --git a/keyboards/chocopad/config.h b/keyboards/chocopad/config.h
index bf861ccda..2163ff8bc 100644
--- a/keyboards/chocopad/config.h
+++ b/keyboards/chocopad/config.h
@@ -40,10 +40,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
-
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
 #define RGBLIGHT_HUE_STEP 8
@@ -56,4 +52,4 @@
 #define ws2812_PORTREG  PORTD
 #define ws2812_DDRREG   DDRD
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/clueboard/60/config.h b/keyboards/clueboard/60/config.h
index 5c5a86296..a862d2cda 100644
--- a/keyboards/clueboard/60/config.h
+++ b/keyboards/clueboard/60/config.h
@@ -49,9 +49,6 @@
 /* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
 #define DEBOUNCE 6
 
-/* Prevent modifiers from being stuck on after layer changes. */
-#define PREVENT_STUCK_MODIFIERS
-
 /* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
 //#define LOCKING_SUPPORT_ENABLE
 /* Locking resynchronize hack */
diff --git a/keyboards/clueboard/66/keymaps/bloodlvst/config.h b/keyboards/clueboard/66/keymaps/bloodlvst/config.h
index 320401dbd..456936cf9 100644
--- a/keyboards/clueboard/66/keymaps/bloodlvst/config.h
+++ b/keyboards/clueboard/66/keymaps/bloodlvst/config.h
@@ -3,6 +3,5 @@
 
 #include "../../config.h"
 
-#define PREVENT_STUCK_MODIFIERS
 #define DISABLE_SPACE_CADET_ROLLOVER
 #endif
diff --git a/keyboards/comet46/config.h b/keyboards/comet46/config.h
index 90d923f90..2421f5341 100644
--- a/keyboards/comet46/config.h
+++ b/keyboards/comet46/config.h
@@ -52,8 +52,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *  These options are also useful to firmware size reduction.
  */
 
-#define PREVENT_STUCK_MODIFIERS
-
 /* disable debug print */
 //#define NO_DEBUG
 
diff --git a/keyboards/contra/config.h b/keyboards/contra/config.h
index 85077ed46..c6bb374da 100755
--- a/keyboards/contra/config.h
+++ b/keyboards/contra/config.h
@@ -43,10 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
-
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 0
diff --git a/keyboards/contra/keymaps/ryanm101/config.h b/keyboards/contra/keymaps/ryanm101/config.h
index 9a458b892..224a4a37d 100644
--- a/keyboards/contra/keymaps/ryanm101/config.h
+++ b/keyboards/contra/keymaps/ryanm101/config.h
@@ -3,7 +3,6 @@
 
 #include "config_common.h"
 
-#define PREVENT_STUCK_MODIFIERS
 #define TAPPING_TERM 200
 
 #ifdef AUDIO_ENABLE
@@ -28,7 +27,7 @@
 /* enable basic MIDI features:
    - MIDI notes can be sent when in Music mode is on
 */
-                                
+
 #define MIDI_BASIC
 
 /* enable advanced MIDI features:
@@ -42,4 +41,4 @@
 /* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
 //#define MIDI_TONE_KEYCODE_OCTAVES 2
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/crawlpad/config.h b/keyboards/crawlpad/config.h
index a07c79cd2..c72be83f2 100755
--- a/keyboards/crawlpad/config.h
+++ b/keyboards/crawlpad/config.h
@@ -40,9 +40,6 @@
     false \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #ifdef RGBLIGHT_ENABLE
 #define RGB_DI_PIN D3
 #define RGBLIGHT_ANIMATIONS
diff --git a/keyboards/crkbd/keymaps/default/config.h b/keyboards/crkbd/keymaps/default/config.h
index 8d25f7cbc..c573530f7 100644
--- a/keyboards/crkbd/keymaps/default/config.h
+++ b/keyboards/crkbd/keymaps/default/config.h
@@ -36,7 +36,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define USE_SERIAL_PD2
 
-#define PREVENT_STUCK_MODIFIERS
 #define TAPPING_FORCE_HOLD
 #define TAPPING_TERM 100
 
diff --git a/keyboards/dichotemy/config.h b/keyboards/dichotemy/config.h
index b3bd6d942..1d92cf74e 100644
--- a/keyboards/dichotemy/config.h
+++ b/keyboards/dichotemy/config.h
@@ -52,8 +52,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *  These options are also useful to firmware size reduction.
  */
 
-#define PREVENT_STUCK_MODIFIERS
-
 /* disable debug print */
 //#define NO_DEBUG
 
diff --git a/keyboards/dilly/config.h b/keyboards/dilly/config.h
index 97a6e533b..d9ca4597c 100644
--- a/keyboards/dilly/config.h
+++ b/keyboards/dilly/config.h
@@ -43,10 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
-
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
 #define RGBLIGHT_HUE_STEP 8
@@ -59,4 +55,4 @@
 #define ws2812_PORTREG  PORTD
 #define ws2812_DDRREG   DDRD
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/dz60/config.h b/keyboards/dz60/config.h
index 8e1a5ae5f..e58eae085 100644
--- a/keyboards/dz60/config.h
+++ b/keyboards/dz60/config.h
@@ -41,9 +41,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN E2
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 16
diff --git a/keyboards/dz60/keymaps/LEdiodes/config.h b/keyboards/dz60/keymaps/LEdiodes/config.h
index bb78d9bb6..4f991b9ca 100644
--- a/keyboards/dz60/keymaps/LEdiodes/config.h
+++ b/keyboards/dz60/keymaps/LEdiodes/config.h
@@ -41,9 +41,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN E2
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 16
diff --git a/keyboards/ergodone/config.h b/keyboards/ergodone/config.h
index 1feff26aa..2c764d782 100644
--- a/keyboards/ergodone/config.h
+++ b/keyboards/ergodone/config.h
@@ -53,8 +53,6 @@
 /* Set 0 if debouncing isn't needed */
 #define DEBOUNCE    5
 
-#define PREVENT_STUCK_MODIFIERS
-
 #define USB_MAX_POWER_CONSUMPTION 500
 
 /* NKRO */
diff --git a/keyboards/ergodox_ez/config.h b/keyboards/ergodox_ez/config.h
index 07a9b5497..7a350183b 100644
--- a/keyboards/ergodox_ez/config.h
+++ b/keyboards/ergodox_ez/config.h
@@ -97,8 +97,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #define DEBOUNCE    15
 
-#define PREVENT_STUCK_MODIFIERS
-
 #define USB_MAX_POWER_CONSUMPTION 500
 
 // RGB backlight
diff --git a/keyboards/ergodox_ez/keymaps/heartrobotninja/rules.mk b/keyboards/ergodox_ez/keymaps/heartrobotninja/rules.mk
index 38112a906..db5e5d155 100644
--- a/keyboards/ergodox_ez/keymaps/heartrobotninja/rules.mk
+++ b/keyboards/ergodox_ez/keymaps/heartrobotninja/rules.mk
@@ -13,6 +13,7 @@ AUTOLOG_ENABLE = no
 RGBLIGHT_ENABLE = yes
 RGBLIGHT_ANIMATION = yes
 EXTRAKEY_ENABLE = yes
+LEADER_ENABLE = yes
 
 OPT_DEFS += -DUSER_PRINT
 
@@ -31,4 +32,4 @@ OPT_DEFS += -DKEYMAP_VERSION=\"$(KEYMAP_VERSION)\\\#$(KEYMAP_BRANCH)\"
 
 ifndef QUANTUM_DIR
         include ../../../../Makefile
-endif
\ No newline at end of file
+endif
diff --git a/keyboards/ergodox_ez/keymaps/vim/vim.h b/keyboards/ergodox_ez/keymaps/vim/vim.h
index e9b682fd3..7565c6e3e 100644
--- a/keyboards/ergodox_ez/keymaps/vim/vim.h
+++ b/keyboards/ergodox_ez/keymaps/vim/vim.h
@@ -9,7 +9,6 @@
 
 #define PRESS(keycode) register_code16(keycode)
 #define RELEASE(keycode) unregister_code16(keycode)
-#define PREVENT_STUCK_MODIFIERS
 
 uint16_t VIM_QUEUE = KC_NO;
 
diff --git a/keyboards/ergodox_infinity/keymaps/gordon/config.h b/keyboards/ergodox_infinity/keymaps/gordon/config.h
index 88d495b12..772ce0bac 100644
--- a/keyboards/ergodox_infinity/keymaps/gordon/config.h
+++ b/keyboards/ergodox_infinity/keymaps/gordon/config.h
@@ -15,8 +15,6 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#define PREVENT_STUCK_MODIFIERS
-
 #undef  IGNORE_MOD_TAP_INTERRUPT
 #define IGNORE_MOD_TAP_INTERRUPT
 
diff --git a/keyboards/ergodox_infinity/keymaps/narze/config.h b/keyboards/ergodox_infinity/keymaps/narze/config.h
index 8174edd35..551327a12 100644
--- a/keyboards/ergodox_infinity/keymaps/narze/config.h
+++ b/keyboards/ergodox_infinity/keymaps/narze/config.h
@@ -13,7 +13,6 @@
 
 #define IGNORE_MOD_TAP_INTERRUPT
 #define PERMISSIVE_HOLD
-#define PREVENT_STUCK_MODIFIERS
 
 #undef MOUSEKEY_DELAY
 #define MOUSEKEY_DELAY 100
diff --git a/keyboards/ergodox_infinity/keymaps/not-quite-neo/rules.mk b/keyboards/ergodox_infinity/keymaps/not-quite-neo/rules.mk
index 75624bb8c..74505bd69 100644
--- a/keyboards/ergodox_infinity/keymaps/not-quite-neo/rules.mk
+++ b/keyboards/ergodox_infinity/keymaps/not-quite-neo/rules.mk
@@ -1,2 +1,3 @@
 BACKLIGHT_ENABLE = yes
-UNICODE_ENABLE = yes
\ No newline at end of file
+UNICODE_ENABLE = yes
+LEADER_ENABLE = yes
diff --git a/keyboards/ergoinu/config.h b/keyboards/ergoinu/config.h
index 4b7c58400..de72635b1 100644
--- a/keyboards/ergoinu/config.h
+++ b/keyboards/ergoinu/config.h
@@ -31,8 +31,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define PRODUCT         ergoinu
 #define DESCRIPTION     An (Not Portable But Small) Ergonomic split keyboard
 
-
-#define PREVENT_STUCK_MODIFIERS
 #define TAPPING_FORCE_HOLD
 #define TAPPING_TERM 100
 
diff --git a/keyboards/ergotravel/keymaps/ckofy/config.h b/keyboards/ergotravel/keymaps/ckofy/config.h
index caae080d7..41ec06657 100644
--- a/keyboards/ergotravel/keymaps/ckofy/config.h
+++ b/keyboards/ergotravel/keymaps/ckofy/config.h
@@ -33,9 +33,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define TAPPING_TOGGLE 2
 
-// required if modifiers are defined in layers besided the default one.
-#define PREVENT_STUCK_MODIFIERS
-
 #undef RGBLED_NUM
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 12
diff --git a/keyboards/felix/config.h b/keyboards/felix/config.h
index f70089af4..003fe87dc 100644
--- a/keyboards/felix/config.h
+++ b/keyboards/felix/config.h
@@ -42,8 +42,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
 
 /* there is no rgb underglow by default. */
 #define RGB_DI_PIN
@@ -53,4 +51,4 @@
 #define RGBLIGHT_SAT_STEP 8
 #define RGBLIGHT_VAL_STEP 8
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/four_banger/config.h b/keyboards/four_banger/config.h
index 96011cbdf..8dceff5db 100644
--- a/keyboards/four_banger/config.h
+++ b/keyboards/four_banger/config.h
@@ -43,9 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN E6
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
@@ -55,4 +52,4 @@
 #define RGBLIGHT_VAL_STEP 8
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/fourier/keymaps/jennetters/config.h b/keyboards/fourier/keymaps/jennetters/config.h
index 87cda7b5c..5f99c65ad 100644
--- a/keyboards/fourier/keymaps/jennetters/config.h
+++ b/keyboards/fourier/keymaps/jennetters/config.h
@@ -22,10 +22,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define TAPPING_TERM 100
 
-/* Try to prevent sticky keys */
-#define PREVENT_STUCK_MODIFIERS
-
 /* Use I2C or Serial, not both */
 
 #define USE_SERIAL
-// #define USE_I2C
\ No newline at end of file
+// #define USE_I2C
diff --git a/keyboards/fractal/config.h b/keyboards/fractal/config.h
index 30b703b6e..1a5901f98 100755
--- a/keyboards/fractal/config.h
+++ b/keyboards/fractal/config.h
@@ -43,10 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
-
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 0
diff --git a/keyboards/frosty_flake/keymaps/nikchi/rules.mk b/keyboards/frosty_flake/keymaps/nikchi/rules.mk
index ad86e82d2..b21eb6404 100644
--- a/keyboards/frosty_flake/keymaps/nikchi/rules.mk
+++ b/keyboards/frosty_flake/keymaps/nikchi/rules.mk
@@ -1,5 +1,5 @@
 # Build Options
-#   change to "no" to disable the options, or define them in the Makefile in 
+#   change to "no" to disable the options, or define them in the Makefile in
 #   the appropriate keymap folder that will get included automatically
 #
 BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
@@ -17,6 +17,7 @@ BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
 RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
 SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 TAP_DANCE_ENABLE = yes
+LEADER_ENABLE = yes
 
 ifndef QUANTUM_DIR
         include ../../../../Makefile
diff --git a/keyboards/gh80_3000/config.h b/keyboards/gh80_3000/config.h
index 83d30129a..ca72aba5a 100644
--- a/keyboards/gh80_3000/config.h
+++ b/keyboards/gh80_3000/config.h
@@ -43,10 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
-
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 0
@@ -55,4 +51,4 @@
 #define RGBLIGHT_VAL_STEP 8
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/gherkin/config.h b/keyboards/gherkin/config.h
index 4607962d7..34f38e35c 100644
--- a/keyboards/gherkin/config.h
+++ b/keyboards/gherkin/config.h
@@ -43,10 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
-
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 0
@@ -55,4 +51,4 @@
 #define RGBLIGHT_VAL_STEP 8
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/gherkin/keymaps/talljoe_gherkin/config.h b/keyboards/gherkin/keymaps/talljoe_gherkin/config.h
index 3e9e692d3..7fa3bf328 100644
--- a/keyboards/gherkin/keymaps/talljoe_gherkin/config.h
+++ b/keyboards/gherkin/keymaps/talljoe_gherkin/config.h
@@ -3,6 +3,4 @@
 
 #include "../../config.h"
 
-#define PREVENT_STUCK_MODIFIERS
-
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/gonnerd/keymaps/gam3cat/config.h b/keyboards/gonnerd/keymaps/gam3cat/config.h
index a3819d3a5..d86da86e4 100644
--- a/keyboards/gonnerd/keymaps/gam3cat/config.h
+++ b/keyboards/gonnerd/keymaps/gam3cat/config.h
@@ -1,7 +1,6 @@
 #include "../../config.h"
 //GRAVE_ESC override for CTRL+SHIFT+ESC Windows task manager shortcut.
 #define GRAVE_ESC_CTRL_OVERRIDE
-#define PREVENT_STUCK_MODIFIERS
 
 //Delay matrix scan for tap dance, reduce to activate modifier keys faster.
 //#define TAPPING_TERM 200
diff --git a/keyboards/hadron/keymaps/default/config.h b/keyboards/hadron/keymaps/default/config.h
index 0f349ad93..09922b61b 100644
--- a/keyboards/hadron/keymaps/default/config.h
+++ b/keyboards/hadron/keymaps/default/config.h
@@ -5,7 +5,6 @@
 
 #define LEADER_TIMEOUT 300
 //#define BACKLIGHT_BREATHING
-#define PREVENT_STUCK_MODIFIERS
 
 #define USE_I2C
 #define SSD1306OLED
diff --git a/keyboards/hadron/keymaps/side_numpad/config.h b/keyboards/hadron/keymaps/side_numpad/config.h
index 0f349ad93..09922b61b 100644
--- a/keyboards/hadron/keymaps/side_numpad/config.h
+++ b/keyboards/hadron/keymaps/side_numpad/config.h
@@ -5,7 +5,6 @@
 
 #define LEADER_TIMEOUT 300
 //#define BACKLIGHT_BREATHING
-#define PREVENT_STUCK_MODIFIERS
 
 #define USE_I2C
 #define SSD1306OLED
diff --git a/keyboards/handwired/MS_sculpt_mobile/config.h b/keyboards/handwired/MS_sculpt_mobile/config.h
index f89514278..c3bdf333e 100644
--- a/keyboards/handwired/MS_sculpt_mobile/config.h
+++ b/keyboards/handwired/MS_sculpt_mobile/config.h
@@ -28,10 +28,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define DESCRIPTION     6000
 
 /* key matrix size */
-#define MATRIX_ROWS 8 
-#define MATRIX_COLS 18 
+#define MATRIX_ROWS 8
+#define MATRIX_COLS 18
 
-#ifdef ASTAR 
+#ifdef ASTAR
 #define PRODUCT         sculpt mobile astar
                         /*0   1   2   3    4   5  6   7   8 */
 #define MATRIX_ROW_PINS {D7, C6, D4, D0, D1, D3, D2, E2}
@@ -95,6 +95,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_MACRO
 //#define NO_ACTION_FUNCTION
 
-#define PREVENT_STUCK_MODIFIERS
-
 #endif
diff --git a/keyboards/handwired/atreus50/keymaps/ajp10304/config.h b/keyboards/handwired/atreus50/keymaps/ajp10304/config.h
index 6916d1a7d..f5e6bbabe 100644
--- a/keyboards/handwired/atreus50/keymaps/ajp10304/config.h
+++ b/keyboards/handwired/atreus50/keymaps/ajp10304/config.h
@@ -3,8 +3,6 @@
 
 #include "../../config.h"
 
-#define PREVENT_STUCK_MODIFIERS
-
 #undef MATRIX_ROW_PINS
 #undef MATRIX_COL_PINS
 
diff --git a/keyboards/handwired/dactyl/config.h b/keyboards/handwired/dactyl/config.h
index a990cc720..08931ecd3 100644
--- a/keyboards/handwired/dactyl/config.h
+++ b/keyboards/handwired/dactyl/config.h
@@ -63,8 +63,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Set 0 if debouncing isn't needed */
 #define DEBOUNCE    15
 
-#define PREVENT_STUCK_MODIFIERS
-
 #define USB_MAX_POWER_CONSUMPTION 500
 
 #endif
diff --git a/keyboards/handwired/kbod/config.h b/keyboards/handwired/kbod/config.h
index f3d0c8bf2..a3f3e3908 100644
--- a/keyboards/handwired/kbod/config.h
+++ b/keyboards/handwired/kbod/config.h
@@ -48,7 +48,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 /* COL2ROW, ROW2COL, or CUSTOM_MATRIX */
 #define DIODE_DIRECTION COL2ROW
- 
+
 // #define BACKLIGHT_PIN B7
 // #define BACKLIGHT_BREATHING
 // #define BACKLIGHT_LEVELS 3
@@ -159,8 +159,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_MACRO
 //#define NO_ACTION_FUNCTION
 
-#define PREVENT_STUCK_MODIFIERS
-
 #undef TAPPING_TOGGLE
 #define TAPPING_TOGGLE 2
 
diff --git a/keyboards/handwired/promethium/keymaps/default/config.h b/keyboards/handwired/promethium/keymaps/default/config.h
index fa86e2247..2064f3676 100644
--- a/keyboards/handwired/promethium/keymaps/default/config.h
+++ b/keyboards/handwired/promethium/keymaps/default/config.h
@@ -11,8 +11,6 @@
 /* skip bootmagic and eeconfig */
 #define BOOTMAGIC_KEY_SKIP              KC_SPACE
 
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGBSPS_ENABLE
 #define RGBSPS_DEMO_ENABLE
 
diff --git a/keyboards/handwired/promethium/keymaps/priyadi/config.h b/keyboards/handwired/promethium/keymaps/priyadi/config.h
index fa86e2247..2064f3676 100644
--- a/keyboards/handwired/promethium/keymaps/priyadi/config.h
+++ b/keyboards/handwired/promethium/keymaps/priyadi/config.h
@@ -11,8 +11,6 @@
 /* skip bootmagic and eeconfig */
 #define BOOTMAGIC_KEY_SKIP              KC_SPACE
 
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGBSPS_ENABLE
 #define RGBSPS_DEMO_ENABLE
 
diff --git a/keyboards/handwired/space_oddity/config.h b/keyboards/handwired/space_oddity/config.h
index 9c9361ced..46d854099 100644
--- a/keyboards/handwired/space_oddity/config.h
+++ b/keyboards/handwired/space_oddity/config.h
@@ -49,10 +49,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
-
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 0
diff --git a/keyboards/helix/pico/config.h b/keyboards/helix/pico/config.h
index b49f0173b..41edfcbc2 100644
--- a/keyboards/helix/pico/config.h
+++ b/keyboards/helix/pico/config.h
@@ -28,7 +28,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define DESCRIPTION     A split keyboard for the cheap makers
 
 
-#define PREVENT_STUCK_MODIFIERS
 #define TAPPING_FORCE_HOLD
 #define TAPPING_TERM 100
 
diff --git a/keyboards/helix/rev1/keymaps/OLED_sample/config.h b/keyboards/helix/rev1/keymaps/OLED_sample/config.h
index 0e1b787a5..5e8989d96 100644
--- a/keyboards/helix/rev1/keymaps/OLED_sample/config.h
+++ b/keyboards/helix/rev1/keymaps/OLED_sample/config.h
@@ -35,7 +35,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define SSD1306OLED
 
-#define PREVENT_STUCK_MODIFIERS
+#define USE_SERIAL_PD2
+
 #define TAPPING_FORCE_HOLD
 #define TAPPING_TERM 100
 
diff --git a/keyboards/helix/rev2/config.h b/keyboards/helix/rev2/config.h
index 058236122..b354d312d 100644
--- a/keyboards/helix/rev2/config.h
+++ b/keyboards/helix/rev2/config.h
@@ -28,7 +28,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define DESCRIPTION     A split keyboard for the cheap makers
 
 
-#define PREVENT_STUCK_MODIFIERS
 #define TAPPING_FORCE_HOLD
 #define TAPPING_TERM 100
 
diff --git a/keyboards/hhkb/keymaps/blakedietz/rules.mk b/keyboards/hhkb/keymaps/blakedietz/rules.mk
index 7c16b2c98..7d97e7a52 100644
--- a/keyboards/hhkb/keymaps/blakedietz/rules.mk
+++ b/keyboards/hhkb/keymaps/blakedietz/rules.mk
@@ -1,2 +1,3 @@
 TAP_DANCE_ENABLE = no
 UNICODE_ENABLE   = no
+LEADER_ENABLE = yes
diff --git a/keyboards/infinity60/config.h b/keyboards/infinity60/config.h
index 8306c8f7e..c1e9ec5b1 100644
--- a/keyboards/infinity60/config.h
+++ b/keyboards/infinity60/config.h
@@ -18,8 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifndef CONFIG_H
 #define CONFIG_H
 
-#define PREVENT_STUCK_MODIFIERS
-
 /* USB Device descriptor parameter */
 #define VENDOR_ID       0x1c11
 #define PRODUCT_ID      0xb04d
diff --git a/keyboards/iris/keymaps/davidrambo/config.h b/keyboards/iris/keymaps/davidrambo/config.h
index 01e078e32..2cdff4213 100644
--- a/keyboards/iris/keymaps/davidrambo/config.h
+++ b/keyboards/iris/keymaps/davidrambo/config.h
@@ -27,7 +27,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 /* Select hand configuration */
 #define PERMISSIVE_HOLD
-#define PREVENT_STUCK_MODIFIERS
 #define MASTER_LEFT
 // #define MASTER_RIGHT
 // #define EE_HANDS
diff --git a/keyboards/iris/keymaps/jennetters/config.h b/keyboards/iris/keymaps/jennetters/config.h
index a3c0634f5..42f91bd02 100644
--- a/keyboards/iris/keymaps/jennetters/config.h
+++ b/keyboards/iris/keymaps/jennetters/config.h
@@ -19,9 +19,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define TAPPING_TERM 150
 
-/* Try to prevent sticky keys */
-#define PREVENT_STUCK_MODIFIERS
-
 /* Use I2C or Serial, not both */
 
 #define USE_SERIAL
@@ -38,4 +35,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define RGBLED_NUM 12
 #define RGBLIGHT_HUE_STEP 8
 #define RGBLIGHT_SAT_STEP 8
-#define RGBLIGHT_VAL_STEP 8
\ No newline at end of file
+#define RGBLIGHT_VAL_STEP 8
diff --git a/keyboards/iris/keymaps/krusli/config.h b/keyboards/iris/keymaps/krusli/config.h
index a53c746ad..72e35c472 100644
--- a/keyboards/iris/keymaps/krusli/config.h
+++ b/keyboards/iris/keymaps/krusli/config.h
@@ -20,8 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include "config_common.h"
 
-// #define PREVENT_STUCK_MODIFIERS
-
 /* Use I2C or Serial, not both */
 
 #define USE_SERIAL
diff --git a/keyboards/iris/keymaps/xyverz/config.h b/keyboards/iris/keymaps/xyverz/config.h
index 0c61a8eac..b820a0753 100644
--- a/keyboards/iris/keymaps/xyverz/config.h
+++ b/keyboards/iris/keymaps/xyverz/config.h
@@ -23,8 +23,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define USE_SERIAL
 #define EE_HANDS
 
-#define PREVENT_STUCK_MODIFIERS
-
 #undef PRODUCT
 #define PRODUCT Iris Keyboard
 
diff --git a/keyboards/jc65/v32u4/keymaps/gam3cat/config.h b/keyboards/jc65/v32u4/keymaps/gam3cat/config.h
index a3819d3a5..d86da86e4 100644
--- a/keyboards/jc65/v32u4/keymaps/gam3cat/config.h
+++ b/keyboards/jc65/v32u4/keymaps/gam3cat/config.h
@@ -1,7 +1,6 @@
 #include "../../config.h"
 //GRAVE_ESC override for CTRL+SHIFT+ESC Windows task manager shortcut.
 #define GRAVE_ESC_CTRL_OVERRIDE
-#define PREVENT_STUCK_MODIFIERS
 
 //Delay matrix scan for tap dance, reduce to activate modifier keys faster.
 //#define TAPPING_TERM 200
diff --git a/keyboards/jj40/keymaps/ajp10304/config.h b/keyboards/jj40/keymaps/ajp10304/config.h
deleted file mode 100644
index 11cafbefc..000000000
--- a/keyboards/jj40/keymaps/ajp10304/config.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef CONFIG_USER_H
-#define CONFIG_USER_H
-
-#include "../../config.h"
-
-#define PREVENT_STUCK_MODIFIERS
-
-#endif
diff --git a/keyboards/jj40/keymaps/fun40/config.h b/keyboards/jj40/keymaps/fun40/config.h
index 89807d84a..f2b5d264e 100644
--- a/keyboards/jj40/keymaps/fun40/config.h
+++ b/keyboards/jj40/keymaps/fun40/config.h
@@ -4,6 +4,5 @@
 #include "../../config.h"
 
 #define FORCE_NKRO
-#define PREVENT_STUCK_MODIFIERS
 
 #endif
diff --git a/keyboards/jj40/keymaps/krusli/config.h b/keyboards/jj40/keymaps/krusli/config.h
index 6d98a37a6..e710dbbb6 100644
--- a/keyboards/jj40/keymaps/krusli/config.h
+++ b/keyboards/jj40/keymaps/krusli/config.h
@@ -3,7 +3,6 @@
 
 #include "../../config.h"
 
-#define PREVENT_STUCK_MODIFIERS
 // #define TAPPING_TERM 300
 
 #endif
diff --git a/keyboards/jj40/keymaps/oscillope/config.h b/keyboards/jj40/keymaps/oscillope/config.h
index d7f991fa9..e812903de 100644
--- a/keyboards/jj40/keymaps/oscillope/config.h
+++ b/keyboards/jj40/keymaps/oscillope/config.h
@@ -3,7 +3,6 @@
 
 #include "../../config.h"
 
-#define PREVENT_STUCK_MODIFIERS
 #define TAPPING_TERM 200
 
 #endif
diff --git a/keyboards/jj40/keymaps/suzuken/config.h b/keyboards/jj40/keymaps/suzuken/config.h
index 52aaa8f24..b1d74e1e6 100644
--- a/keyboards/jj40/keymaps/suzuken/config.h
+++ b/keyboards/jj40/keymaps/suzuken/config.h
@@ -3,7 +3,6 @@
 
 #include "../../config.h"
 
-#define PREVENT_STUCK_MODIFIERS
 #define TAPPING_TERM 300
 
 #endif
diff --git a/keyboards/jj40/keymaps/waples/config.h b/keyboards/jj40/keymaps/waples/config.h
index 52aaa8f24..b1d74e1e6 100644
--- a/keyboards/jj40/keymaps/waples/config.h
+++ b/keyboards/jj40/keymaps/waples/config.h
@@ -3,7 +3,6 @@
 
 #include "../../config.h"
 
-#define PREVENT_STUCK_MODIFIERS
 #define TAPPING_TERM 300
 
 #endif
diff --git a/keyboards/jm60/config.h b/keyboards/jm60/config.h
index 847cf2078..cb5c90bb1 100644
--- a/keyboards/jm60/config.h
+++ b/keyboards/jm60/config.h
@@ -18,8 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifndef CONFIG_H
 #define CONFIG_H
 
-#define PREVENT_STUCK_MODIFIERS
-
 /* USB Device descriptor parameter */
 #define VENDOR_ID       0xFEED
 #define PRODUCT_ID      0x6464
diff --git a/keyboards/k_type/config.h b/keyboards/k_type/config.h
index d19e0ff64..4937d9ad9 100644
--- a/keyboards/k_type/config.h
+++ b/keyboards/k_type/config.h
@@ -18,8 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifndef CONFIG_H
 #define CONFIG_H
 
-#define PREVENT_STUCK_MODIFIERS
-
 /* USB Device descriptor parameter */
 #define VENDOR_ID       0x1c11
 #define PRODUCT_ID      0xb04d
diff --git a/keyboards/katana60/config.h b/keyboards/katana60/config.h
index 169cffb42..aaf2b5d54 100644
--- a/keyboards/katana60/config.h
+++ b/keyboards/katana60/config.h
@@ -48,7 +48,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 /* COL2ROW, ROW2COL, or CUSTOM_MATRIX */
 #define DIODE_DIRECTION ROW2COL
- 
+
 // #define BACKLIGHT_PIN B7
 // #define BACKLIGHT_BREATHING
 // #define BACKLIGHT_LEVELS 3
@@ -111,7 +111,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 )
 
 #define TAPPING_TERM 200
-#define PREVENT_STUCK_MODIFIERS
 
 /* control how magic key switches layers */
 //#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS  true
diff --git a/keyboards/kbd75/config.h b/keyboards/kbd75/config.h
index f76d9082f..726afcaf6 100644
--- a/keyboards/kbd75/config.h
+++ b/keyboards/kbd75/config.h
@@ -43,9 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN E2
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
diff --git a/keyboards/kinesis/keymaps/insertsnideremarks/config.h b/keyboards/kinesis/keymaps/insertsnideremarks/config.h
index 3548fa348..9ce094be5 100644
--- a/keyboards/kinesis/keymaps/insertsnideremarks/config.h
+++ b/keyboards/kinesis/keymaps/insertsnideremarks/config.h
@@ -5,7 +5,6 @@
 #include "../../config.h"
 
 // place overrides here
-#define PREVENT_STUCK_MODIFIERS
 #define IGNORE_MOD_TAP_INTERRUPT
 #define TAPPING_TERM 175
 #define TAPPING_TOGGLE 2
diff --git a/keyboards/lets_split/keymaps/OLED_sample/config.h b/keyboards/lets_split/keymaps/OLED_sample/config.h
index e8632fe61..6aa909d28 100644
--- a/keyboards/lets_split/keymaps/OLED_sample/config.h
+++ b/keyboards/lets_split/keymaps/OLED_sample/config.h
@@ -38,8 +38,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define SSD1306OLED
 //#define OLED_ROTATE180
 
-
-#define PREVENT_STUCK_MODIFIERS
 #define TAPPING_FORCE_HOLD
 #define TAPPING_TERM 100
 
diff --git a/keyboards/lets_split/keymaps/adam/config.h b/keyboards/lets_split/keymaps/adam/config.h
index ff29eb1bd..59a2e5db7 100644
--- a/keyboards/lets_split/keymaps/adam/config.h
+++ b/keyboards/lets_split/keymaps/adam/config.h
@@ -43,7 +43,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #undef TAPPING_TERM
 #define TAPPING_TERM 200 //At 500 some bad logic takes hold
-#define PREVENT_STUCK_MODIFIERS
 #define IGNORE_MOD_TAP_INTERRUPT
 #define PERMISSIVE_HOLD
 
diff --git a/keyboards/lets_split/keymaps/khord/config.h b/keyboards/lets_split/keymaps/khord/config.h
index 4ebdbad76..71ec20dbc 100644
--- a/keyboards/lets_split/keymaps/khord/config.h
+++ b/keyboards/lets_split/keymaps/khord/config.h
@@ -25,9 +25,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define TAPPING_TERM 150
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 /* Use I2C or Serial, not both */
 
 #define USE_SERIAL
diff --git a/keyboards/lets_split/keymaps/piemod/config.h b/keyboards/lets_split/keymaps/piemod/config.h
index 001b62e41..1b3fd7544 100644
--- a/keyboards/lets_split/keymaps/piemod/config.h
+++ b/keyboards/lets_split/keymaps/piemod/config.h
@@ -43,7 +43,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define RGBLIGHT_EFFECT_KNIGHT_LENGTH 1
 
 // Typing Options
-#define PREVENT_STUCK_MODIFIERS
 #define QMK_KEYS_PER_SCAN 4
 
 #endif
diff --git a/keyboards/lets_split/keymaps/waples/config.h b/keyboards/lets_split/keymaps/waples/config.h
index 98ebeff45..5221fd011 100644
--- a/keyboards/lets_split/keymaps/waples/config.h
+++ b/keyboards/lets_split/keymaps/waples/config.h
@@ -12,6 +12,4 @@
 //  #define MASTER_RIGHT
 #define EE_HANDS              // We like to have choices I guess
 
-#define PREVENT_STUCK_MODIFIERS // When switching layers, this will release all mods
-
 #endif
diff --git a/keyboards/lets_split/keymaps/xk/config.h b/keyboards/lets_split/keymaps/xk/config.h
index c75ed12cc..a5cd51857 100644
--- a/keyboards/lets_split/keymaps/xk/config.h
+++ b/keyboards/lets_split/keymaps/xk/config.h
@@ -37,7 +37,6 @@ the Free Software Foundation, either version 2 of the License, or
 #define EE_HANDS
 
 
-#define PREVENT_STUCK_MODIFIERS
 #define IGNORE_MOD_TAP_INTERRUPT
 #define PERMISSIVE_HOLD
 
diff --git a/keyboards/m10a/keymaps/gam3cat/config.h b/keyboards/m10a/keymaps/gam3cat/config.h
deleted file mode 100644
index 73bc50bc2..000000000
--- a/keyboards/m10a/keymaps/gam3cat/config.h
+++ /dev/null
@@ -1,2 +0,0 @@
-#include "../../config.h"
-#define PREVENT_STUCK_MODIFIERS
diff --git a/keyboards/mechmini/v2/config.h b/keyboards/mechmini/v2/config.h
index 58c751e0f..e0922bb7e 100755
--- a/keyboards/mechmini/v2/config.h
+++ b/keyboards/mechmini/v2/config.h
@@ -62,9 +62,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN E2
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
diff --git a/keyboards/melody96/config.h b/keyboards/melody96/config.h
index 6083dcf75..67123a7e5 100644
--- a/keyboards/melody96/config.h
+++ b/keyboards/melody96/config.h
@@ -43,9 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN E2
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
diff --git a/keyboards/minidox/keymaps/alairock/config.h b/keyboards/minidox/keymaps/alairock/config.h
index 445606031..3649fdd12 100644
--- a/keyboards/minidox/keymaps/alairock/config.h
+++ b/keyboards/minidox/keymaps/alairock/config.h
@@ -36,5 +36,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define RGBLIGHT_HUE_STEP 10
 #define RGBLIGHT_SAT_STEP 17
 #define RGBLIGHT_VAL_STEP 17
-#define PREVENT_STUCK_MODIFIERS
 #endif
diff --git a/keyboards/minidox/keymaps/khitsule/config.h b/keyboards/minidox/keymaps/khitsule/config.h
index 702354864..645e80ee8 100644
--- a/keyboards/minidox/keymaps/khitsule/config.h
+++ b/keyboards/minidox/keymaps/khitsule/config.h
@@ -1,8 +1,6 @@
 #ifndef CONFIG_USER_H
 #define CONFIG_USER_H
 
-#define PREVENT_STUCK_MODIFIERS
-
 #define IGNORE_MOD_TAP_INTERRUPT
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/mint60/config.h b/keyboards/mint60/config.h
index 37b69e93a..51c586e63 100644
--- a/keyboards/mint60/config.h
+++ b/keyboards/mint60/config.h
@@ -29,7 +29,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define PRODUCT         Mint60
 #define DESCRIPTION     A row staggered split keyboard
 
-#define PREVENT_STUCK_MODIFIERS
 #define TAPPING_FORCE_HOLD
 #define TAPPING_TERM 100
 
diff --git a/keyboards/mitosis/config.h b/keyboards/mitosis/config.h
index 6101ee123..5cfd2e4b1 100644
--- a/keyboards/mitosis/config.h
+++ b/keyboards/mitosis/config.h
@@ -52,8 +52,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *  These options are also useful to firmware size reduction.
  */
 
-#define PREVENT_STUCK_MODIFIERS
-
 /* disable debug print */
 //#define NO_DEBUG
 
diff --git a/keyboards/niu_mini/config.h b/keyboards/niu_mini/config.h
index 2f2230616..b9d3ed4e9 100644
--- a/keyboards/niu_mini/config.h
+++ b/keyboards/niu_mini/config.h
@@ -64,9 +64,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN E2
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
diff --git a/keyboards/novelpad/config.h b/keyboards/novelpad/config.h
index 0d6a71343..3a47c0eb6 100755
--- a/keyboards/novelpad/config.h
+++ b/keyboards/novelpad/config.h
@@ -53,9 +53,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     false \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define BACKLIGHT_LEVELS 10
 #define BACKLIGHT_PIN B7
 
diff --git a/keyboards/noxary/268/config.h b/keyboards/noxary/268/config.h
index b2cb95e95..7eec79a1b 100644
--- a/keyboards/noxary/268/config.h
+++ b/keyboards/noxary/268/config.h
@@ -60,9 +60,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 /* ws2812b options */
 #define RGB_DI_PIN B5
 #ifdef RGB_DI_PIN
@@ -73,4 +70,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define RGBLIGHT_VAL_STEP 16
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/ok60/config.h b/keyboards/ok60/config.h
index 61c2fa0ed..db7b74e58 100644
--- a/keyboards/ok60/config.h
+++ b/keyboards/ok60/config.h
@@ -71,9 +71,6 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN F6
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 10
diff --git a/keyboards/omnikey_blackheart/config.h b/keyboards/omnikey_blackheart/config.h
index 14b4a5f17..94412cfa6 100644
--- a/keyboards/omnikey_blackheart/config.h
+++ b/keyboards/omnikey_blackheart/config.h
@@ -45,10 +45,6 @@
 /* force n-key rollover*/
 #define FORCE_NKRO
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
-
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 0
@@ -57,4 +53,4 @@
 #define RGBLIGHT_VAL_STEP 8
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/paladin64/config.h b/keyboards/paladin64/config.h
index 27f54bf16..a5280f4d4 100755
--- a/keyboards/paladin64/config.h
+++ b/keyboards/paladin64/config.h
@@ -110,8 +110,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
 #define RGB_DI_PIN D0
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
diff --git a/keyboards/pegasushoof/keymaps/citadel/config.h b/keyboards/pegasushoof/keymaps/citadel/config.h
index e8eafe2e1..2d27ff392 100644
--- a/keyboards/pegasushoof/keymaps/citadel/config.h
+++ b/keyboards/pegasushoof/keymaps/citadel/config.h
@@ -8,7 +8,4 @@
 #undef PRODUCT
 #define PRODUCT Pegasus Hoof Citadel
 
-/* necessary option for this keymap, because CAPS is redefined in Layer 0 */
-#define PREVENT_STUCK_MODIFIERS
-
 #endif
diff --git a/keyboards/planck/keymaps/ajp10304/config.h b/keyboards/planck/keymaps/ajp10304/config.h
deleted file mode 100644
index 11cafbefc..000000000
--- a/keyboards/planck/keymaps/ajp10304/config.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef CONFIG_USER_H
-#define CONFIG_USER_H
-
-#include "../../config.h"
-
-#define PREVENT_STUCK_MODIFIERS
-
-#endif
diff --git a/keyboards/planck/keymaps/altgr/config.h b/keyboards/planck/keymaps/altgr/config.h
index d55258c02..e517a8b24 100644
--- a/keyboards/planck/keymaps/altgr/config.h
+++ b/keyboards/planck/keymaps/altgr/config.h
@@ -3,9 +3,6 @@
 
 #include "../../config.h"
 
-// required because lower/raise modifiers are redefined by colemak-dh
-#define PREVENT_STUCK_MODIFIERS
-
 // tap dance key press termination interval
 #define TAPPING_TERM 250
 
diff --git a/keyboards/planck/keymaps/am/config.h b/keyboards/planck/keymaps/am/config.h
index b2b87045b..1ae457e3b 100644
--- a/keyboards/planck/keymaps/am/config.h
+++ b/keyboards/planck/keymaps/am/config.h
@@ -1,8 +1,5 @@
 #pragma once
 
-/* Prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #ifdef AUDIO_ENABLE
     #define STARTUP_SONG SONG(PLANCK_SOUND)
 
diff --git a/keyboards/planck/keymaps/andylikescandy/config.h b/keyboards/planck/keymaps/andylikescandy/config.h
index 0de5f3db0..01169db2a 100644
--- a/keyboards/planck/keymaps/andylikescandy/config.h
+++ b/keyboards/planck/keymaps/andylikescandy/config.h
@@ -17,9 +17,6 @@
 
 #define PERMISSIVE_HOLD
 
-#define PREVENT_STUCK_MODIFIERS
-
-
 /*
  * MIDI options
  */
diff --git a/keyboards/planck/keymaps/bone2planck/config.h b/keyboards/planck/keymaps/bone2planck/config.h
deleted file mode 100644
index 3e9e692d3..000000000
--- a/keyboards/planck/keymaps/bone2planck/config.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef CONFIG_USER_H
-#define CONFIG_USER_H
-
-#include "../../config.h"
-
-#define PREVENT_STUCK_MODIFIERS
-
-#endif
\ No newline at end of file
diff --git a/keyboards/planck/keymaps/davidrambo/config.h b/keyboards/planck/keymaps/davidrambo/config.h
index c3bebf579..2decb3dc8 100644
--- a/keyboards/planck/keymaps/davidrambo/config.h
+++ b/keyboards/planck/keymaps/davidrambo/config.h
@@ -3,7 +3,6 @@
 #define CONFIG_USER_H
 #define TAPPING_TERM 200
 #include "../../config.h"
-#define PERMISSIVE_HOLD 
-#define PREVENT_STUCK_MODIFIERS
+#define PERMISSIVE_HOLD
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/planck/keymaps/dshields/config.h b/keyboards/planck/keymaps/dshields/config.h
index 480ba453a..9ba854ef0 100644
--- a/keyboards/planck/keymaps/dshields/config.h
+++ b/keyboards/planck/keymaps/dshields/config.h
@@ -10,7 +10,6 @@
 
 #define _______ KC_TRNS
 #define XXXXXXX KC_NO
-#define PREVENT_STUCK_MODIFIERS
 
 #define USB_MAX_POWER_CONSUMPTION 100
 #define ONESHOT_TAP_TOGGLE        2
diff --git a/keyboards/planck/keymaps/espynn/keymap.c b/keyboards/planck/keymaps/espynn/keymap.c
index 9cf508af6..5615a78bf 100644
--- a/keyboards/planck/keymaps/espynn/keymap.c
+++ b/keyboards/planck/keymaps/espynn/keymap.c
@@ -5,7 +5,6 @@
 #ifdef BACKLIGHT_ENABLE
   #include "backlight.h"
 #endif
-#define PREVENT_STUCK_MODIFIERS
 extern keymap_config_t keymap_config;
 
 // Symbolic names for macro IDs.
diff --git a/keyboards/planck/keymaps/experimental/config.h b/keyboards/planck/keymaps/experimental/config.h
index 0864b5fbc..86cc4760b 100644
--- a/keyboards/planck/keymaps/experimental/config.h
+++ b/keyboards/planck/keymaps/experimental/config.h
@@ -5,8 +5,6 @@
 
 #define LEADER_TIMEOUT 300
 #define BACKLIGHT_BREATHING
-#define PREVENT_STUCK_MODIFIERS
-
 
 /* ws2812 RGB LED */
 #define RGB_DI_PIN B1
diff --git a/keyboards/planck/keymaps/experimental/rules.mk b/keyboards/planck/keymaps/experimental/rules.mk
index b135dfca0..168d3cb9f 100644
--- a/keyboards/planck/keymaps/experimental/rules.mk
+++ b/keyboards/planck/keymaps/experimental/rules.mk
@@ -18,10 +18,11 @@ BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
 RGBLIGHT_ENABLE = yes        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
 SWAP_HANDS_ENABLE = yes        # Enable one-hand typing
 STENO_ENABLE = yes                                      # Enable TX Bolt protocol for Stenography, requires VIRTSER and may not work with mouse keys
+LEADER_ENABLE = yes
 
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
 SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 
 ifndef QUANTUM_DIR
         include ../../../../Makefile
-endif
\ No newline at end of file
+endif
diff --git a/keyboards/planck/keymaps/hiea/config.h b/keyboards/planck/keymaps/hiea/config.h
index 9bb5e0873..655cdf5db 100644
--- a/keyboards/planck/keymaps/hiea/config.h
+++ b/keyboards/planck/keymaps/hiea/config.h
@@ -3,9 +3,6 @@
 
 #include "../../config.h"
 
-// required because lower/raise modifiers are redefined by colemak-dh
-#define PREVENT_STUCK_MODIFIERS
-
 // tap dance key press termination interval
 #define TAPPING_TERM 250
 
diff --git a/keyboards/planck/keymaps/hieax/config.h b/keyboards/planck/keymaps/hieax/config.h
index 9bb5e0873..655cdf5db 100644
--- a/keyboards/planck/keymaps/hieax/config.h
+++ b/keyboards/planck/keymaps/hieax/config.h
@@ -3,9 +3,6 @@
 
 #include "../../config.h"
 
-// required because lower/raise modifiers are redefined by colemak-dh
-#define PREVENT_STUCK_MODIFIERS
-
 // tap dance key press termination interval
 #define TAPPING_TERM 250
 
diff --git a/keyboards/planck/keymaps/ishtob/config.h b/keyboards/planck/keymaps/ishtob/config.h
index e58ade0b0..688607634 100755
--- a/keyboards/planck/keymaps/ishtob/config.h
+++ b/keyboards/planck/keymaps/ishtob/config.h
@@ -2,7 +2,6 @@
 #ifndef USERSPACE_CONFIG_H
 #define USERSPACE_CONFIG_H
 
-
 #ifdef AUDIO_ENABLE
 
 // #define STARTUP_SONG SONG(E1M1_DOOM)
@@ -24,7 +23,6 @@
 #define FORCE_NKRO
 
 #define LEADER_TIMEOUT 300
-#define PREVENT_STUCK_MODIFIERS
 
 #undef DEBOUNCE
 #define DEBOUNCE 0
diff --git a/keyboards/planck/keymaps/jarred/config.h b/keyboards/planck/keymaps/jarred/config.h
index f98b8935e..9e8f404c1 100644
--- a/keyboards/planck/keymaps/jarred/config.h
+++ b/keyboards/planck/keymaps/jarred/config.h
@@ -19,8 +19,6 @@
 
 #include "config_common.h"
 
-#define PREVENT_STUCK_MODIFIERS
-
 #ifdef AUDIO_ENABLE
     #define STARTUP_SONG SONG(PLANCK_SOUND)
 #endif
@@ -34,6 +32,6 @@
 
 #define MOUSEKEY_WHEEL_DELAY 0
 #define MOUSEKEY_WHEEL_MAX_SPEED   4
-#define MOUSEKEY_WHEEL_TIME_TO_MAX 255  
+#define MOUSEKEY_WHEEL_TIME_TO_MAX 255
 
 #endif
diff --git a/keyboards/planck/keymaps/jeremy-dev/keymap.c b/keyboards/planck/keymaps/jeremy-dev/keymap.c
index 5aea44329..89b7e6b84 100644
--- a/keyboards/planck/keymaps/jeremy-dev/keymap.c
+++ b/keyboards/planck/keymaps/jeremy-dev/keymap.c
@@ -1,7 +1,6 @@
 // This is the personal keymap of Jeremy Cowgar (@jcowgar). It is written for the programmer.
 
 // Configuration options
-#define PREVENT_STUCK_MODIFIERS
 
 #pragma message "You may need to add LAYOUT_planck_grid to your keymap layers - see default for an example"
 #include "planck.h"
diff --git a/keyboards/planck/keymaps/kmontag42/rules.mk b/keyboards/planck/keymaps/kmontag42/rules.mk
index b9f73934a..0c100076b 100644
--- a/keyboards/planck/keymaps/kmontag42/rules.mk
+++ b/keyboards/planck/keymaps/kmontag42/rules.mk
@@ -1,4 +1,5 @@
 UNICODE_ENABLE = yes
+LEADER_ENABLE = yes
 
 ifndef QUANTUM_DIR
         include ../../../../Makefile
diff --git a/keyboards/planck/keymaps/lae3/config.h b/keyboards/planck/keymaps/lae3/config.h
deleted file mode 100644
index a28634e69..000000000
--- a/keyboards/planck/keymaps/lae3/config.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef LAE3_KEYMAP_H
-#define LAE3_KEYMAP_H
-
-#include "../../config.h"
-
-#define PREVENT_STUCK_MODIFIERS
-
-#endif
diff --git a/keyboards/planck/keymaps/mitch/config.h b/keyboards/planck/keymaps/mitch/config.h
index 10591b3c8..bb7989d90 100644
--- a/keyboards/planck/keymaps/mitch/config.h
+++ b/keyboards/planck/keymaps/mitch/config.h
@@ -1,6 +1,5 @@
 #include "../../config.h"
-#define PREVENT_STUCK_MODIFIERS
 
 // for the broken board
 #undef MATRIX_COL_PINS
-#define MATRIX_COL_PINS { F1, F0, B0, B2, F4, F5, F6, F7, D4, D6, B4, D7 }
\ No newline at end of file
+#define MATRIX_COL_PINS { F1, F0, B0, B2, F4, F5, F6, F7, D4, D6, B4, D7 }
diff --git a/keyboards/planck/keymaps/mitch/readme.md b/keyboards/planck/keymaps/mitch/readme.md
index 3869304f4..9ed1133ef 100644
--- a/keyboards/planck/keymaps/mitch/readme.md
+++ b/keyboards/planck/keymaps/mitch/readme.md
@@ -20,7 +20,3 @@ rest of the symbols, mostly mapped with the ten key numbers.
 
 The normal right shift key uses the `MT` macro to trigger Enter on tap and right
 shift when held.
-
-This keymap sets the `PREVENT_STUCK_MODIFIERS` flag to avoid the occasional WTF
-moments when using a modifier keys and accidentally releasing them after moving
-to a new layer.
diff --git a/keyboards/planck/keymaps/narze/config.h b/keyboards/planck/keymaps/narze/config.h
index e081a93b5..19d784b2b 100644
--- a/keyboards/planck/keymaps/narze/config.h
+++ b/keyboards/planck/keymaps/narze/config.h
@@ -33,10 +33,9 @@
 
 #define IGNORE_MOD_TAP_INTERRUPT
 #define PERMISSIVE_HOLD
-#define PREVENT_STUCK_MODIFIERS
 
 #define SUPER_DUPER_SOUND S__NOTE(_B1)
 
 #define MOUSEKEY_DELAY 100
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/planck/keymaps/neo2planck/config.h b/keyboards/planck/keymaps/neo2planck/config.h
deleted file mode 100644
index 3e9e692d3..000000000
--- a/keyboards/planck/keymaps/neo2planck/config.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef CONFIG_USER_H
-#define CONFIG_USER_H
-
-#include "../../config.h"
-
-#define PREVENT_STUCK_MODIFIERS
-
-#endif
\ No newline at end of file
diff --git a/keyboards/planck/keymaps/priyadi/config.h b/keyboards/planck/keymaps/priyadi/config.h
index 448ae3b90..876d057bf 100644
--- a/keyboards/planck/keymaps/priyadi/config.h
+++ b/keyboards/planck/keymaps/priyadi/config.h
@@ -11,8 +11,6 @@
 /* skip bootmagic and eeconfig */
 #define BOOTMAGIC_KEY_SKIP              KC_SPACE
 
-#define PREVENT_STUCK_MODIFIERS
-
 #define UNICODE_TYPE_DELAY 0
 
 #define LAYOUT_DVORAK
diff --git a/keyboards/planck/keymaps/sdothum/config.h b/keyboards/planck/keymaps/sdothum/config.h
index 4b2cdeece..8bed79e6f 100644
--- a/keyboards/planck/keymaps/sdothum/config.h
+++ b/keyboards/planck/keymaps/sdothum/config.h
@@ -3,9 +3,6 @@
 
 #include "../../config.h"
 
-// required because lower/raise modifiers are redefined by colemak-dh
-#define PREVENT_STUCK_MODIFIERS
-
 // tap dance key press termination interval
 #define TAPPING_TERM 250
 
diff --git a/keyboards/planck/keymaps/steno/config.h b/keyboards/planck/keymaps/steno/config.h
index 1879ab007..4f99c7eb8 100644
--- a/keyboards/planck/keymaps/steno/config.h
+++ b/keyboards/planck/keymaps/steno/config.h
@@ -15,8 +15,6 @@
 
 #define MUSIC_MASK (keycode != KC_NO)
 
-#define PREVENT_STUCK_MODIFIERS
-
 /*
  * MIDI options
  */
@@ -41,4 +39,4 @@
 /* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
 //#define MIDI_TONE_KEYCODE_OCTAVES 2
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/planck/keymaps/tehwalris/config.h b/keyboards/planck/keymaps/tehwalris/config.h
index 4725e1426..c5d55b969 100644
--- a/keyboards/planck/keymaps/tehwalris/config.h
+++ b/keyboards/planck/keymaps/tehwalris/config.h
@@ -3,8 +3,6 @@
 
 #include "../../config.h"
 
-#define PREVENT_STUCK_MODIFIERS
-
 #ifdef AUDIO_ENABLE
     // #define STARTUP_SONG SONG(PLANCK_SOUND)
     #define STARTUP_SONG SONG(NO_SOUND)
@@ -27,7 +25,7 @@
 /* enable basic MIDI features:
    - MIDI notes can be sent when in Music mode is on
 */
-                                
+
 #define MIDI_BASIC
 
 /* enable advanced MIDI features:
diff --git a/keyboards/planck/keymaps/vifon/config.h b/keyboards/planck/keymaps/vifon/config.h
index 4cb4a1235..be395faad 100644
--- a/keyboards/planck/keymaps/vifon/config.h
+++ b/keyboards/planck/keymaps/vifon/config.h
@@ -26,9 +26,6 @@
 /* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
 //#define MIDI_TONE_KEYCODE_OCTAVES 2
 
-/* prevent the modifiers from being stuck, sacrificing some memory */
-#define PREVENT_STUCK_MODIFIERS
-
 /* A larger buffer for the dynamic macros as this keymap is not taking
  * up that much memory.
  */
diff --git a/keyboards/planck/keymaps/yale/config.h b/keyboards/planck/keymaps/yale/config.h
deleted file mode 100644
index 8a916bbd0..000000000
--- a/keyboards/planck/keymaps/yale/config.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#ifndef CONFIG_USER_H
-#define CONFIG_USER_H
-
-#include "../../config.h"
-
-#define PREVENT_STUCK_MODIFIERS
-
-#endif
-
-
-
diff --git a/keyboards/planck/keymaps/zach/config.h b/keyboards/planck/keymaps/zach/config.h
index 19a3856a3..dc79bad06 100644
--- a/keyboards/planck/keymaps/zach/config.h
+++ b/keyboards/planck/keymaps/zach/config.h
@@ -55,7 +55,6 @@
 //#define NO_ACTION_ONESHOT
 #define NO_ACTION_MACRO
 #define NO_ACTION_FUNCTION
-#define PREVENT_STUCK_MODIFIERS
 //#define DYNAMIC_MACRO_ENABLE    // Enable if you need to use the macro functionality
 //#define SPACE_CADET             // Parenthesis on L/R shift
 
diff --git a/keyboards/planck/rev6/config.h b/keyboards/planck/rev6/config.h
index 0e462180b..afd69f7d8 100644
--- a/keyboards/planck/rev6/config.h
+++ b/keyboards/planck/rev6/config.h
@@ -50,9 +50,6 @@
 /* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
 #define DEBOUNCE 6
 
-/* Prevent modifiers from being stuck on after layer changes. */
-#define PREVENT_STUCK_MODIFIERS
-
 /* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
 //#define LOCKING_SUPPORT_ENABLE
 /* Locking resynchronize hack */
diff --git a/keyboards/playkbtw/ca66/config.h b/keyboards/playkbtw/ca66/config.h
index c35718042..53bbe95e3 100644
--- a/keyboards/playkbtw/ca66/config.h
+++ b/keyboards/playkbtw/ca66/config.h
@@ -42,8 +42,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
 
 #define RGB_DI_PIN B1
 #ifdef RGB_DI_PIN
diff --git a/keyboards/playkbtw/pk60/config.h b/keyboards/playkbtw/pk60/config.h
index 06101349c..601e3c8a5 100644
--- a/keyboards/playkbtw/pk60/config.h
+++ b/keyboards/playkbtw/pk60/config.h
@@ -43,9 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN E2
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
@@ -55,4 +52,4 @@
 #define RGBLIGHT_VAL_STEP 8
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/preonic/keymaps/bucktooth/config.h b/keyboards/preonic/keymaps/bucktooth/config.h
index b98883120..23e9e0ed2 100644
--- a/keyboards/preonic/keymaps/bucktooth/config.h
+++ b/keyboards/preonic/keymaps/bucktooth/config.h
@@ -4,6 +4,5 @@
 #include "../../config.h"
 
 #define FORCE_NKRO 1
-#define PREVENT_STUCK_MODIFIERS
 
 #endif
diff --git a/keyboards/preonic/keymaps/jacwib/config.h b/keyboards/preonic/keymaps/jacwib/config.h
index b98883120..23e9e0ed2 100644
--- a/keyboards/preonic/keymaps/jacwib/config.h
+++ b/keyboards/preonic/keymaps/jacwib/config.h
@@ -4,6 +4,5 @@
 #include "../../config.h"
 
 #define FORCE_NKRO 1
-#define PREVENT_STUCK_MODIFIERS
 
 #endif
diff --git a/keyboards/preonic/keymaps/kuatsure/rules.mk b/keyboards/preonic/keymaps/kuatsure/rules.mk
index 76d73acef..9369f99a9 100644
--- a/keyboards/preonic/keymaps/kuatsure/rules.mk
+++ b/keyboards/preonic/keymaps/kuatsure/rules.mk
@@ -1 +1,2 @@
 BACKLIGHT_ENABLE  = no
+LEADER_ENABLE = yes
diff --git a/keyboards/preonic/keymaps/that_canadian/config.h b/keyboards/preonic/keymaps/that_canadian/config.h
deleted file mode 100644
index 11cafbefc..000000000
--- a/keyboards/preonic/keymaps/that_canadian/config.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef CONFIG_USER_H
-#define CONFIG_USER_H
-
-#include "../../config.h"
-
-#define PREVENT_STUCK_MODIFIERS
-
-#endif
diff --git a/keyboards/preonic/keymaps/zach/config.h b/keyboards/preonic/keymaps/zach/config.h
index bb8913c7a..40a083da3 100644
--- a/keyboards/preonic/keymaps/zach/config.h
+++ b/keyboards/preonic/keymaps/zach/config.h
@@ -87,7 +87,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 #define NO_ACTION_MACRO
 #define NO_ACTION_FUNCTION
-#define PREVENT_STUCK_MODIFIERS
 //#define DYNAMIC_MACRO_ENABLE    // Enable if you need to use the macro functionality
 //#define SPACE_CADET             // Parenthesis on L/R shift
 
diff --git a/keyboards/preonic/rev3/config.h b/keyboards/preonic/rev3/config.h
index 3f57c591a..98899dc6a 100644
--- a/keyboards/preonic/rev3/config.h
+++ b/keyboards/preonic/rev3/config.h
@@ -50,9 +50,6 @@
 /* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
 #define DEBOUNCE 6
 
-/* Prevent modifiers from being stuck on after layer changes. */
-#define PREVENT_STUCK_MODIFIERS
-
 /* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
 //#define LOCKING_SUPPORT_ENABLE
 /* Locking resynchronize hack */
diff --git a/keyboards/prime_r/config.h b/keyboards/prime_r/config.h
index b53f14905..ad92199a2 100644
--- a/keyboards/prime_r/config.h
+++ b/keyboards/prime_r/config.h
@@ -60,10 +60,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
-
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 0
diff --git a/keyboards/rorschach/keymaps/insertsnideremarks/config.h b/keyboards/rorschach/keymaps/insertsnideremarks/config.h
index 90fb5120d..2048232c9 100644
--- a/keyboards/rorschach/keymaps/insertsnideremarks/config.h
+++ b/keyboards/rorschach/keymaps/insertsnideremarks/config.h
@@ -11,7 +11,6 @@
 // #define MASTER_RIGHT
 #define EE_HANDS
 
-#define PREVENT_STUCK_MODIFIERS
 #define IGNORE_MOD_TAP_INTERRUPT
 #define TAPPING_TERM 175
 #define TAPPING_TOGGLE 2
diff --git a/keyboards/s60_x/keymaps/bluebear/config.h b/keyboards/s60_x/keymaps/bluebear/config.h
index 35754b523..10bddf0d3 100644
--- a/keyboards/s60_x/keymaps/bluebear/config.h
+++ b/keyboards/s60_x/keymaps/bluebear/config.h
@@ -105,7 +105,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // Space Cadet Rollover - if set, allows to tap opposite shift key to cancel erroneous press
 #define DISABLE_SPACE_CADET_ROLLOVER
 
-// Prevent stuck modifiers
-#define PREVENT_STUCK_MODIFIERS
-
 #endif
diff --git a/keyboards/s60_x/rgb/config.h b/keyboards/s60_x/rgb/config.h
index ec8b0f49e..d9c26658d 100644
--- a/keyboards/s60_x/rgb/config.h
+++ b/keyboards/s60_x/rgb/config.h
@@ -17,9 +17,6 @@
 /* Locking resynchronize hack */
 #define LOCKING_RESYNC_ENABLE
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN F6
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
@@ -29,4 +26,4 @@
 #define RGBLIGHT_VAL_STEP 8
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/s65_plus/config.h b/keyboards/s65_plus/config.h
index df60e60a8..60512db46 100644
--- a/keyboards/s65_plus/config.h
+++ b/keyboards/s65_plus/config.h
@@ -49,7 +49,4 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #endif
diff --git a/keyboards/s65_x/config.h b/keyboards/s65_x/config.h
index 8288ef783..367efc526 100644
--- a/keyboards/s65_x/config.h
+++ b/keyboards/s65_x/config.h
@@ -49,8 +49,4 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #endif
diff --git a/keyboards/sx60/config.h b/keyboards/sx60/config.h
index f22fbe8be..52a1cc7a1 100755
--- a/keyboards/sx60/config.h
+++ b/keyboards/sx60/config.h
@@ -46,10 +46,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
-
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 0
diff --git a/keyboards/telophase/config.h b/keyboards/telophase/config.h
index 09655c025..be0a36977 100644
--- a/keyboards/telophase/config.h
+++ b/keyboards/telophase/config.h
@@ -52,8 +52,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *  These options are also useful to firmware size reduction.
  */
 
-#define PREVENT_STUCK_MODIFIERS
-
 /* disable debug print */
 //#define NO_DEBUG
 
diff --git a/keyboards/tetris/config.h b/keyboards/tetris/config.h
index 9c7f525a7..7e7dac7cf 100644
--- a/keyboards/tetris/config.h
+++ b/keyboards/tetris/config.h
@@ -41,9 +41,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define TAPPING_TERM 200
 #define PERMISSIVE_HOLD
 
@@ -62,4 +59,4 @@
 //#define RGBLIGHT_LIMIT_VAL 128
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/thevankeyboards/bananasplit/keymaps/talljoe/config.h b/keyboards/thevankeyboards/bananasplit/keymaps/talljoe/config.h
index bb2aadfa6..fc9bd3d61 100644
--- a/keyboards/thevankeyboards/bananasplit/keymaps/talljoe/config.h
+++ b/keyboards/thevankeyboards/bananasplit/keymaps/talljoe/config.h
@@ -3,7 +3,6 @@
 
 #include QMK_KEYBOARD_CONFIG_H
 
-#define PREVENT_STUCK_MODIFIERS
 #define SPACE_COUNT 3
 
 #define TEMPLATE(                                                                     \
diff --git a/keyboards/tokyo60/config.h b/keyboards/tokyo60/config.h
index 6e6ab2215..16927be17 100644
--- a/keyboards/tokyo60/config.h
+++ b/keyboards/tokyo60/config.h
@@ -47,9 +47,6 @@
 /* Locking resynchronize hack */
 #define LOCKING_RESYNC_ENABLE
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN F7
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
diff --git a/keyboards/tomato/config.h b/keyboards/tomato/config.h
index f33c13108..185cb326c 100644
--- a/keyboards/tomato/config.h
+++ b/keyboards/tomato/config.h
@@ -34,9 +34,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 /* eliminate lag on space cadet mods */
 #define PERMISSIVE_HOLD
 
diff --git a/keyboards/uk78/config.h b/keyboards/uk78/config.h
index 35f5bf70b..34d672079 100644
--- a/keyboards/uk78/config.h
+++ b/keyboards/uk78/config.h
@@ -60,9 +60,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 /* ws2812b options */
 #define RGB_DI_PIN F6
 #ifdef RGB_DI_PIN
diff --git a/keyboards/viterbi/keymaps/drashna/config.h b/keyboards/viterbi/keymaps/drashna/config.h
index 687f80441..a1e361e34 100644
--- a/keyboards/viterbi/keymaps/drashna/config.h
+++ b/keyboards/viterbi/keymaps/drashna/config.h
@@ -53,7 +53,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define NO_MUSIC_MODE
 #endif
 
-#undef PREVENT_STUCK_MODIFIERS
+#define STRICT_LAYER_RELEASE
 
 #define LAYOUT_ortho_5x7( \
     L00, L01, L02, L03, L04, L05, L06, \
diff --git a/keyboards/whitefox/config.h b/keyboards/whitefox/config.h
index 9f021fb51..a8047cf54 100644
--- a/keyboards/whitefox/config.h
+++ b/keyboards/whitefox/config.h
@@ -18,8 +18,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifndef CONFIG_H
 #define CONFIG_H
 
-#define PREVENT_STUCK_MODIFIERS
-
 /* USB Device descriptor parameter */
 #define VENDOR_ID       0x1c11
 #define PRODUCT_ID      0xb04d
diff --git a/keyboards/xd60/keymaps/kmontag42/rules.mk b/keyboards/xd60/keymaps/kmontag42/rules.mk
new file mode 100644
index 000000000..d0d2ef6d5
--- /dev/null
+++ b/keyboards/xd60/keymaps/kmontag42/rules.mk
@@ -0,0 +1 @@
+LEADER_ENABLE = yes
diff --git a/keyboards/xd75/keymaps/davidrambo/config.h b/keyboards/xd75/keymaps/davidrambo/config.h
index e87ccde79..f21914703 100644
--- a/keyboards/xd75/keymaps/davidrambo/config.h
+++ b/keyboards/xd75/keymaps/davidrambo/config.h
@@ -20,7 +20,6 @@
 #include "../../config.h"
 
 #define TAPPING_TERM 200
-#define PERMISSIVE_HOLD 
-#define PREVENT_STUCK_MODIFIERS
+#define PERMISSIVE_HOLD
 
 #endif
diff --git a/keyboards/xd75/keymaps/tdl-jturner/config.h b/keyboards/xd75/keymaps/tdl-jturner/config.h
index 561a48d7e..985247bb2 100644
--- a/keyboards/xd75/keymaps/tdl-jturner/config.h
+++ b/keyboards/xd75/keymaps/tdl-jturner/config.h
@@ -26,7 +26,6 @@
 #define TAPPING_TOGGLE 2
 //#define PERMISSIVE_HOLD
 //#define QMK_KEYS_PER_SCAN 4
-#define PREVENT_STUCK_MODIFIERS
 #define FORCE_NKRO
 
 #define MOUSEKEY_INTERVAL 16
diff --git a/keyboards/xmmx/config.h b/keyboards/xmmx/config.h
index f3f893e28..8cb2cf82d 100644
--- a/keyboards/xmmx/config.h
+++ b/keyboards/xmmx/config.h
@@ -43,10 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
-
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 0
@@ -55,4 +51,4 @@
 #define RGBLIGHT_VAL_STEP 8
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/ymd96/keymaps/hgoel89/config.h b/keyboards/ymd96/keymaps/hgoel89/config.h
index 52aaa8f24..b1d74e1e6 100644
--- a/keyboards/ymd96/keymaps/hgoel89/config.h
+++ b/keyboards/ymd96/keymaps/hgoel89/config.h
@@ -3,7 +3,6 @@
 
 #include "../../config.h"
 
-#define PREVENT_STUCK_MODIFIERS
 #define TAPPING_TERM 300
 
 #endif
diff --git a/keyboards/z150_blackheart/config.h b/keyboards/z150_blackheart/config.h
index d2fce9aee..362153652 100644
--- a/keyboards/z150_blackheart/config.h
+++ b/keyboards/z150_blackheart/config.h
@@ -39,14 +39,10 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
-
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 0
 #define RGBLIGHT_HUE_STEP 8
 #define RGBLIGHT_SAT_STEP 8
 #define RGBLIGHT_VAL_STEP 8
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/zeal60/keymaps/tusing/config.h b/keyboards/zeal60/keymaps/tusing/config.h
index 93f260946..64aaece50 100644
--- a/keyboards/zeal60/keymaps/tusing/config.h
+++ b/keyboards/zeal60/keymaps/tusing/config.h
@@ -34,7 +34,3 @@
 // Scale brightnes according to BRIGHTNESS_CORRECTION_TABLE in quantum/rgblight.c.
 // This allows to mitigate uneven brightness from LED underglow strips.
 // #define LED_BRIGHTNESS_CORRECTION
-
-// Prevent modifiers on layer 1 from persisting after we let go
-#define PREVENT_STUCK_MODIFIERS
-
diff --git a/keyboards/zlant/config.h b/keyboards/zlant/config.h
index 456d225aa..ae9dcfef6 100755
--- a/keyboards/zlant/config.h
+++ b/keyboards/zlant/config.h
@@ -43,9 +43,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGB_DI_PIN D6
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS