How to reproduce:
1. Open the “ShadowArtifact.zip“ project
2. Open the “SampleScene“
3. Disable the Scene Lighting in the Scene view Toolbar
4. Observe the Cube in the Scene view

Expected results: The Cube GameObject is rendered without any shadows
Actual results: The Cube GameObject has an odd shadow artifact cast onto it

Reproducible in: 2021.3.39f1, 2022.3.32f1, 6000.0.5f1

Reproduced on: Windows 11 Pro (23H2)
Not reproduced on: MacOS 14.4.1 (M2), No other environment tested

Notes:
- After some time, the shadow might disappear for no reason, but it will reappear if the Game view window is closed and opened again
- Sometimes, disabling “Cast Shadows“ under “Main Light” of the “URP-High Fidelity” Asset gets rid of the problem temporarily
- The artifact shadow is cast throughout the whole scene, and it does not depend on the position of the Cube GameObject
- The artifact shadow can be cast on other GameObjects too
- It is only visible from a close distance to the GameObject