Update MusicBeatSubState.hx

source/funkin/ui/MusicBeatSubState.hx

@@ -37,17 +37,25 @@ class MusicBeatSubState extends FlxSubState implements IEventHandler
     return _conductorInUse = value;
   }
 
-  public function new(bgColor:FlxColor = FlxColor.TRANSPARENT)
-  {
-    super();
-    this.bgColor = bgColor;
-  }
-
   var controls(get, never):Controls;
 
   inline function get_controls():Controls
     return PlayerSettings.player1.controls;
 
+  public function new(bgColor:FlxColor = FlxColor.TRANSPARENT)
+  {
+    super();
+    this.bgColor = bgColor;
+
+    initCallbacks();
+  }
+
+  function initCallbacks()
+  {
+    subStateOpened.add(onOpenSubStateComplete);
+    subStateClosed.add(onCloseSubStateComplete);
+  }
+
   override function create():Void
   {
     super.create();