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By Design
Votes
0
Found in
2020.3
2021.2
2021.2.0a14
Issue ID
1332381
Regression
No
AssetPostprocessor.OnPostprocessPrefab() is not called when removing components
How to reproduce:
1. Open attached project "OnPostprocessPrefabIssue-2021.2.zip"
2. Select "Assets/Cube.prefab" in Project window
3. Remove "Box Collider" in the Inspector
Expected result: OnPostprocessPrefab() should is called when removing the component
Actual result: OnPostprocessPrefab() is not called when removing the component
Reproducible with - 2020.3.7f1, 2021.1.5f1, 2021.2.a16
Not reproducible with (no AssetPostprocessor.OnPostprocessPrefab) - 2018.4, 2019.4
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Resolution Note:
Works as designed. It can be considered unintuitive, but it's because the Asset Database recognizes it has seen this state of the prefab before and restores it. This is done for performance reasons to avoid triggering long dependency chains of prefabs.