Undo.isProcessing returns false in ChangeEvent when performing undo operation

Unity: Kernel

As Designed

6.0.X

2022.3.X

`Undo.IsProcessing` is functioning as intended here. The system that generates change events occurs after the undo system has finished processing and so `Undo.IsProcessing` is returning the correct result in this case. Change events are generated by watching a given field, when a change is detected; an event is actioned. Change events do not contain any information about whether the origin is from undo.

Reproduction steps:
1. Open the attached “BugRepro” project
2. From the menu navigate to BugRepo > Open Window
3. Change the “Int Value” field to 6
4. Clear the Console window
5. Press undo (Ctrl+ Z)
6. Observe the Console window

Expected result: No messages are printed
Actual result: “Changed value : 6 -> 0” is printed

Reproducible with: 2022.3.39f1, 6000.0.12f1
Couldn't test with: 2021.3.40f1 ('Undo' does not contain a definition for 'isProcessing')

Reproducible on: Windows 11
Not reproducible on: No other environment tested

Undo.isProcessing returns false in ChangeEvent when performing undo operation

Unity: Kernel

As Designed

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Undo.isProcessing returns false in ChangeEvent when performing undo operation

Unity: Kernel

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As Designed

Resolution Notes

Description

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Have a workaround or additional info about this issue?