Trying to Undo causes a crash. [BUG]

[NathanNegreiroMXT]

Describe the bug

If you paste a reference image in, and then try to Undo, blender Crashes.

To Reproduce

1. Ctrl-Shift-V to paste in a reference image.
2. Ctrl-Z to Undo.

Expected behavior

The reference image should be removed.

Platform

Operating System:

• OS: Windows 10
• Version: 20H2

Blender:

• Version: 2.93.1

Screenshots/Screencast

N/A

Additional context

N/A

[thanhph111]

Thank you for your report.
I can reproduce it on Linux, both Blender 2.83 and 2.93. The bug comes from this line:
https://github.com/Yeetus3141/ImagePaste/blob/894d95be07e5495959132cf167dec72fce465293/__init__.py#L121
and these:
https://github.com/Yeetus3141/ImagePaste/blob/894d95be07e5495959132cf167dec72fce465293/__init__.py#L148-L150

These two operators belong to Blender, one from the core and one from the official Import Image as Plane add-on.

With operator bpy.ops.import_image.to_plane, the crash seem to only occur when I change the initial state of the .blend file before executing the operator.

I did some research and it turns out that the bug seems to be related to this planned undo system improvement. I find the Blender version 3.0 alpha less buggy.

So while waiting for the fix, we can use this stopgap: change the state of the scene (e.g., click outside the image) before undo. I may release a patch to temporarily handle it.

[thanhph111]

@NathanNegreiroMXT the new version has fixed this issue, feel free to let us know if it still happens.