How to reproduce:
1. Open the attached “Bug.zip” project
2. In the Game window, open the “Free Aspect” dropdown and enable “VSync”
3. Enter Play Mode
4. Open the “Cube” prefab in a prefab mode, then change any setting in the Transformation component
5. Press save and observe the result
Expected result: Editor doesn’t freeze
Actual result: Editor freezes
Reproducible with: 2020.3.44f1, 2020.3.46f1, 2021.3.21f1, 2022.2.11f1, 2023.1.0b8, 2023.2.0a6
Not reproducible with: 2020.3.43f1
Reproduced on: macOS 13.2.1 (Intel)
Not reproduced on: Windows 11
Notes:
Not reproducible without enabling the “VSync” setting
Not reproducible without entering Play Mode