Reproduction steps:
1. Open the attached “repro_IN-96095“ project
2. Open the “Assets/Scenes/SampleScene.unity“ Scene
3. Enter the Play Mode
4. Observe the freeze

Reproducible with: 6000.1.0a10, 6000.1.0b10, 6000.2.0a6
Not reproducible with: 2022.3.60f1, 6000.1.0a9

Reproducible on: Windows 10 (22H2)
Not reproducible on: No other environments tested

Note: Not possible to check if it’s reproducible in Player - the build consistently fails due to unresolvable namespace issues