Reproduction steps:
1. Open the user’s attached project “repro.zip“
2. Enter Prefab Context mode by pressing the arrow in the Hierarchy
3. Exit back to the scene and reenter the Prefab Context mode
Expected results: Prefab Context mode is reentered successfully without errors
Actual results: Scene window freezes and the Console is spammed by errors
Reproducible with: 2021.3.3f1, 2021.3.6f1
Not reproducible with: 2020.3.37f1, 2021.3.2f1, 2022.1.0a1, 2022.1.10f1, 2022.2.0b2, 2023.1.0a2
Reproduced on: Windows 10 Pro