A possible fix for this is if you go to your AppData\Local\AtC_BB\Saved\SaveGames folder and delete your .sav file manually, it'll usually start functioning normally again. If you don't have a .sav file to delete, then I'm not quite sure why that bug's happening to you? Usually only occurs if the save file gets corrupted, but I rarely ever see it happen in any other case, my apologies in advance if this fix doesn't work for you.