Fix quicksave button not responding after loading

 - I don't really understand how this fix works, so it might not fix in all situations
 - This would only happen under a certain set of conditions, not every time (for example, spamming the quick save button, then making a save, then loading that save)
 - Once a save had the problem, loading the 'bad save' would cause the quicksave to be broken after loading most of the time
 - See 07th-mod/higurashi-rei#2 (comment) for more details

Assets.Scripts.Core/GameSystem.cs

@@ -987,6 +987,7 @@ private void Update()
 				{
 					if (GameState == GameState.Normal)
 					{
+                        UI.SaveLoad.SaveLoadButton.QuicksaveButtonFixerUpdate();
 						TextController.Update();
 						if (!IsSkipping)
 						{

Assets.Scripts.UI.SaveLoad/SaveLoadButton.cs

@@ -21,6 +21,8 @@ public class SaveLoadButton : MonoBehaviour
 
 		private SaveLoadManager manager;
 
+		private static int needUIRefresh = 0;
+
 		private void OnClick()
 		{
 			if (gameSystem == null)
@@ -61,6 +63,7 @@ private void OnClick()
 						}
 						(gameSystem.GetStateObject() as StateChapterScreen)?.RequestLeaveImmediate();
 						GameSystem.Instance.ScriptSystem.LoadGame(slot);
+						needUIRefresh = 2;
 					});
 				}, null);
 				gameSystem.PushStateObject(state2);
@@ -162,5 +165,19 @@ private void Update()
 				time -= Time.deltaTime;
 			}
 		}
+
+		public static void QuicksaveButtonFixerUpdate()
+		{
+			if (needUIRefresh == 1)
+			{
+				GameSystem.Instance.HideUIControls();
+				GameSystem.Instance.ShowUIControls();
+			}
+
+			if (needUIRefresh > 0)
+			{
+				needUIRefresh--;
+			}
+		}
 	}
 }