Reproduction steps:
1. Open the attached project "ReproProj"
2. Open the “/Assets/OutdoorsScene.unity” Scene
3. Open the Rendering Debugger window (Window > Analysis > Rendering Debugger)
4. Go to Rendering tab and open the "Freeze Camera For Culling" dropdown list
Expected result: Camera that is in the Scene is present
Actual result: The only option available is "None"
Reproducible with: 6000.2.0a4 (56df1dd3b76d), 6000.3.11f1, 6000.4.0f1, 6000.5.0b1, 6000.6.0a1
Not reproducible: 6000.0.71f1, 6000.2.0a3 (a53718ca3c62)
Testing environment: Windows 10 Enterprise 21H2
Not reproducible on: No other environment tested