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Fixed in 2022.3.15f1, 2023.2.1f1, 2023.3.0a13

Under Consideration for 2024.1.X

Votes

0

Found in

2022.3.3f1

2023.1.1f1

2023.2.0a20

2024.1.0a1

Issue ID

UUM-40624

Regression

Yes

Crash on UndoManager::RegisterUndo when attaching a script with MonoBehaviour.Reset() function that changes the GameObject's properties

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Reproduction steps:
1. Open the attached project “CrashRepro“
2. Drag ”Assets/NewScript.cs” on “TestingObject“ in the Hierarchy window

Expected result: Script gets added to “TestingObject“ or an error is thrown
Actual result: Editor crashes

Reproducible with: 2022.1.0a12, 2022.3.3f1, 2023.1.1f1, 2023.2.0a20
Not reproducible with: 2021.3.27f1, 2022.1.0a11 - “Can’t add script 'NewScript' to the GameObject 'TestingObject' because it has destroyed itself in Awake or OnEnable“ window appears

Reproducible on: Windows 10

First few lines of Stack Trace:

{noformat}0x00007ff68c29c146 (Unity) UndoManager::RegisterUndo
0x00007ff68c27c603 (Unity) PostAddComponentUndo
0x00007ff68c27735e (Unity) AddComponentUndoable
0x00007ff68bd796df (Unity) AddDefaultComponent
0x00007ff68bd79849 (Unity) AddDefaultComponent
0x00007ff68c1371b6 (Unity) AddComponentMenu::AddComponentToGameObjects{noformat}

Note: Editor does not crash and throws an error when resetting the attached script component from 2022.2.0a3 and above

  1. Resolution Note (fix version 2023.3.0a13):

    Added detection within AddComponent of scripts that potentially destroy the object during Reset.

  2. Resolution Note (fix version 2023.2.1f1):

    Added detection within AddComponent of scripts that potentially destroy the object during Reset.

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