How to reproduce:
1. Open the attached "1319940_Repro" project
2. Open the "A" Scene
3. Drag the "B" Scene into the Hierarchy to load it additively
Expected results: The Cube in Scene "B" is black/doesn't emit light
Actual results: The Cube in Scene "B" is overexposed/emits light
Reproducible with: 7.5.3 (2019.4.23f1), 10.3.1 (2020.3.2f1), 11.0.0 (2021.1.0f1), 12.0.0 (2021.2.0a7)
Could not test with: 2018.4.33f1 because High Definition RP was not yet available
Notes:
- The issue is still reproducible if the Scene is loaded/unloaded using LightProbes.Tetrahedralize