Camera Background Solid Color does not Render

Reproduction steps:
1. Open the attached “IN-109522_Sky No Render.zip“ project
2. Observe the Game View

Expected result: The window has a solid green color
Actual result: The window is black due to the Main Camera not respecting the solid background color

Reproducible with: 6000.0.54f1, 6000.1.14f1,
Not reproducible with: 6000.0.53f1, 6000.2.0b12, 6000.3.0a3

Reproducible on: M1 Max MacOS 15.5 (Tested by CQA)
Not reproducible on: No other environment tested