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Won't Fix
Votes
0
Found in
2019.3
2019.3.4f1
2020.2
Issue ID
1239839
Regression
No
NullReferenceException on Undo.PerformUndo
How to reproduce:
1. Open the attached Perform Undo NullRef.zip project
2. Go to Project window/Scenes/ open Sample Scene
3. Go to the Scene view and make sure Scene View tab is focused on by mouse
4. Press U button on the keyboard
Actual: NullReferenceException is thrown in the console window when performing Undo.PerformUndo
Reproducible with: 2019.3, 2020.2
Note: Could not test with earlier versions because of the thrown errors
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Resolution Note:
It is safer to add a callback to beforeSceneGui instead of duringSceneGui when wanting to use undo actions.
When using duringSceneGui the user can end up reversing some of the handle and tool set up unintentionally.