Reproduction steps:
1. Open the “ReproProject“ project
2. Open the “Assets/Scenes/Level/Londres/lon_sco_01_street_morning“ scene
3. Open the Lighting window (Window > Rendering > Lightning)
4. Click on the “Generate Lighting” button in the Lighting window
5. Observe the “_SetGeometry/lon_sco_street/BuildingMain“ GameObject in the Scene view
6. Select the “_SetGeometry/lon_sco_street/fake_buildings“ GameObject in the Hierarchy window
7. Change the scale on the Z axis to “1” in the Inspector window
8. Repeat step 4
9. Repeat step 5
Expected result: The Lightmaps look the same
Actual result: There are black artifacts on the “_SetGeometry/lon_sco_street/BuildingMain“ GameObject
Reproducible with: 2021.3.37f1, 2022.3.24f1, 2023.2.19f1, 6000.0.0b15
Reproducible on: Windows 11 Pro (22H2)
Not reproducible on: No other environment tested