How to reproduce:
1. Open the attached “IN-139325” project
2. Open the “Game” scene
3. Open the Lighting window (Window > Rendering > Lighting)
4. Click “Generate Lighting”
5. Observe the crash
Reproducible with: 6000.3.12f1, 6000.3.13f1, 6000.4.3f1, 6000.5.0b4, 6000.6.0a3
Not reproducible with: 6000.0.73f1, 6000.3.11f1
Reproduced on: Windows 11
Not reproduced on: No other environment tested
Notes:
- Sometimes the crash can take up to 1 minute to occur after completing step 4
- An “Assertion failed on expression: 'meshAtlasIndex >= 0'“ error appears in the Console window before the crash occurs
First few lines of the stack trace:
0x00007FFC8EA98D24 (Unity) FindSeamTexels
0x00007FFC8EA9A259 (Unity) StitchSeams
0x00007FFC8EA9945C (Unity) SeamStitchingHelperStitchJob
0x00007FFC90784E28 (Unity) ujob_execute_job
0x00007FFC9078422F (Unity) lane_guts
0x00007FFC90787FA9 (Unity) worker_thread_routine