Steps to reproduce:
1. Download and open the attached project
2. Press "Window" > "Rendering" > "Lightning"
3. Press "Generate lightning"
4. Observe the "Play" mode
Expected outcome: No artifact appear
Actual outcome: Black/white artifacts appear
Reproducible with: 2020.3.43f1, 2021.3.16f1, 2022.1.24f1, 2022.2.1f1, 2023.1.0a23