let modifiers unstick layers

src/main.c

@@ -341,6 +341,7 @@ void kbfun_mediakey_press_release() {
 
 // modifier
 void kbfun_modifier_press_release() {
+  layer_sticky_done = true;
   _kbfun_modifier_press_release(current_is_pressed, current_keycode);
 }