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Issue ID




Errors are thrown after redoing Nested Prefab Variant creation



*Reproduction steps:*
# Create a new project
# Create 2 GameObjects: Cube and Sphere
# Drag both GameObjects to the Project Window to make them Prefabs
# Make the Sphere GameObject a child of the Cube GameObject in the Hierarchy window
# Drag the nested prefab into the Project window
# Click “Prefab Variant” in the pop-up that appears
# Undo (on Windows Ctrl + Z, on macOS CMD + Z)
# Redo (on Windows Ctrl + Y, on macOS CMD + Shift + Z)

{*}Expected result{*}: No errors are thrown

{*}Actual result{*}: The following error is thrown:
Component Transform has PrefabInstance different from its game object 'Sphere'. Fixing by setting PrefabInstance to None
UnityEditor.EditorApplication:Internal_CallGlobalEventHandler () {code}
{*}Platforms tested{*}: macOS Monterey 12.6, Ubuntu 20

{*}Note{*}: Also reproducible by using the Context Options (Edit > Undo/Redo)

  1. Resolution Note:

    This issue was fixed by the Undo system overhaul which landed in 2022.1 and due to its complexity could not be backported.

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