Undo after deleting a line created with the Pen tool freezes Illustrator
OS: Windows 10 Enterprise
AI Version: 25.4.1,
Bug replicated with three different computers and instances of Illustrator, all same OS, same AI version, same freeze.
I had a bunch more steps when I ran across this problem, but I was able to replicate it with much fewer steps like so:
With the pen tool, draw a couple vertices.
Delete the line you're making from the table of contents.
Click on the canvas anywhere; the line reappears with a new vertex which you just made.
Undo the vertex you just made (the first time I did it, it undid the pen without a hitch, every time I've tried to recreate it with an otherwise blank canvas it gives a "can't finish previewing ID:-50" error.)
If you hit undo again, Illustrator becomes unresponsive.
I guess it's trying to undelete the line which is already there.
It's easy to avoid now that I know what I did, but still.
Expected result: undo to get rid of the line that reappeared (or, didn't expect the line to reappear in the first place).
Actual result: Undo makes Illustrator become unresponsive.
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It happens with or without the Rubber band
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I confirm that with version 26.3.1
Once you delete the line from Layers, Illustrator offers you to complete the segment with the rubber band, bound to an already deleted point. Once you click, the line gets restored, and undoing it several step back makes Illustrator go unresponding.