🐛 [BUG] Undoing actions may result in loss of frames if you moved them | Undo Actions incorrectly undoes frame move actions #1935
Description
Pencil2D version
0.7.0 - Nightly Build Sep 21 2025
Operating System
Windows
Steps to reproduce
Draw some frames
Move these few frames
If the previous frames (which you moved) were in the same places as your moved frames, you will start to lose your progress when you undo your actions.
w46uye5r7yiutruik.mp4
Expected Behaviour
When you undo an action, the previously moved frames must accept their previous positions.
Actual Behaviour
New frames are created, moved frames remain, there is a risk of losing animation frames due to replacing some frames with others.
Other Information
I tested this in the latest release version and the latest nightly version.
Because of this error I lost two frames of animation :(
It's a small loss in my case, but I consider this mistake quite critical.