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Fixed in 2022.1.X

Fixed in 2021.2.X



Found in


Issue ID




Crash on UndoManager::CheckConsistencyOfAffectedTransforms after undoing script instantiated Prefabs

Scene Management


How to reproduce:
1. Open the attached project ""
2. Click "Tools > Reproduce Undo Error" in the menu items
3. Undo (Ctrl + Z or Edit > Undo)

Reproducible with: 2021.2.3f1, 2021.2.5f1
Not reproducible with: 2019.4.33f1, 2020.3.24f1, 2021.2.2f1, 2022.1.0b1

0x00007ff7cc0b9429 (Unity) UndoManager::CheckConsistencyOfAffectedTransforms
0x00007ff7cc0beec4 (Unity) UndoManager::PostApply
0x00007ff7cc0b9297 (Unity) UndoManager::ApplyUndo
0x00007ff7cc0c2ada (Unity) UndoManager::Undo
0x00007ff7cbbdc2b0 (Unity) MenuController::ExecuteMenuItem
0x00007ff7cc1de951 (Unity) ProcessMainWindowMessages
0x00007ff7cc1fee6a (Unity) ContainerWindow::ContainerWndProc
0x00007ffd3a07e7e8 (USER32) CallWindowProcW
0x00007ffd3a07e229 (USER32) DispatchMessageW
0x00007ff7cc1dd943 (Unity) MainMessageLoop
0x00007ff7cc1e22db (Unity) WinMain
0x00007ff7cd4f13a2 (Unity) __scrt_common_main_seh
0x00007ffd3abe7034 (KERNEL32) BaseThreadInitThunk
0x00007ffd3adc2651 (ntdll) RtlUserThreadStart

  1. Resolution Note (fix version 2021.2):

    Fixed in: 2021.2.10f1

Comments (1)

  1. newt124d

    Jan 31, 2022 00:10

    this work for me, ctrl+z will remove parent than delete created object and no "Attach To Parent" action in the undo history:

    Undo.RegisterCreatedObjectUndo(newGo, "Spawn object");
    Undo.SetTransformParent(newGo.transform, rootTransform, true, "Attach To Parent");

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