Moving line artifacts appear in Player builds when using DirectX 12 with no Camera in the scene

Steps to reproduce

1. Create a new project
2. Go to Edit > Project Settings > Player > Other Settings > Rendering
3. Disable Auto Graphics API for Windows and set the Graphics API to Direct3D 12
4. Delete the Camera GameObject from the scene
5. Select File > Build and Run
6. Observe the Player window

Actual result: Moving line artifacts appear in the Player window
Expected result: The Player window remains black without visual artifacts

Reproducible with: 6000.6.0f1, 6000.7.0a1
Not reproducible with: 6000.0.0f1, 6000.0.83f1, 6000.3.23f1, 6000.6.0a7
Fixed in: 6000.7.0a2

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

Notes:
-Alt+Tabbing away from and back to the Player changes the appearance or behavior of the artifacts
-The issue is not reproducible when using Direct3D 11
-The issue is not reproducible when an active Camera is present in the scene