Created attachment 115457 [details] Here are some screenshots of the issue. SUMMARY I'm trying to use the animation set up you have, but there is an issue with the onion skin I am having. When I draw something, and then go to the next frame, it brings the previous frame along with it. It's supposed to reset the frame, and drop the opacity of the previous, giving it a red coloration, AKA making an "onion skin." What I found out is that when you erase the drawing brought along with it in that frame, then you see the red onion skin, but it should not of brought the entirety of the previous frame in the first place. I'm not sure how you would recreate this, since I asked someone and they said that they've never seen this bug before. I hope that you will be able to resolve this issue quickly. I added an attachment of some screenshots of the problem.
If I understand your explanation correctly, you are not encountering a technical bug, but a perhaps unintuitive design choice. It looks like your later frames have been drawn on top of (copies of) the previous ones. This happens if you create frames either by using the duplicate frame action or by drawing on a frame when auto-keying is enabled. There are differing opinions on what this behavior should be. I am marking this as duplicate to the report where this is already discussed. *** This bug has been marked as a duplicate of bug 367524 ***