I am working on an animation and realized the handles in the timeline that control how many frames are in the onion skin has disappeared. Then I closed the onion skin window and it will not open back up. I have restarted the app, my PC, and I have shut it down completely and turned it back on. Onion skin stuff is still missing. It still works, but I cant change how many frames are being onion skinned and I really need to.