Reproduction steps:
1. Open the attached project "internal-pinball.zip"
2. Select "Flippers" from Assets -> "Flippers"
3. Open the Console

Expected result: There are no errors
Actual result: There are "TypeLoadException" errors

Reproducible with: 1.5.1-pre.3 (2021.2.0a5, 2021.2.0b12, 2022.1.0a8)
Not reproducible with: 1.4.14 (2020.3.18f1), 1.5.1-pre.3 (2021.1.21f1, 2021.2.0a4), 1.5.1-pre.5 (2021.2.0b12, 2022.2.0b12)
Could not test with: 1.5.1-pre.3 (2019.4.30f) - Missing Mono Scripts

Note:
-The following error appears in the Console: TypeLoadException: Could not load type ‘UnityEditor.Experimental.SceneManagement.PrefabStageUtility’ from assembly ‘UnityEditor.CoreModule, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null’