Reproduction steps:
1. Open the attached project "ReproProject"
2. Open the scene “Game” located at Assets/Scenes folder
3. Enter Play Mode and observe the fade effect
4. Exit Play Mode
5. Open the Build Profiles menu (File → Build Profiles)
6. Switch to the "Windows” build profile
7. Build the Player
8. Run the Player and observe the effect
9. Observe the result

Actual result: The fade effect in the build does not render correctly (or at all)
Expected result: The fade effect in the Player should look identical to the Editor’s Play Mode

Reproducible in: 6000.0.0b11 (d93a9ecb7e85), 6000.0.70f1, 6000.3.11f1, 6000.4.0b11, 6000.5.0a8
Could not test with: 2023.1.0a1, 2023.3.0b10 (compilation errors, project instability, scripts missing)

Reproducible on: Windows 11
Not reproducible on: No other environments tested

Notes:
- The Player.log shows multiple missing shader variants that are needed by the build but were stripped during the build process
- Missing shader errors can be found in the internal notes