Unity Issue Tracker - Crash on mono_traverse_object_internal when opening a Prefab while in Play mode on a specific project
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UUM-120158
Crash on mono_traverse_object_internal when opening a Prefab while in Play mode on a specific project
Unity: Mono
Won't Fix
6.2.X
6.0.X
Unity 6000.2 has reached its end of life and will not receive further updates. If you need additional fixes, please upgrade to a newer Unity version.
How to reproduce:
1. Open the attached “IN-107852” project
2. Open the “MainScene“
3. Enter Play mode
4. Navigate to Assets > Prefabs > Wall
5. Double click on the “wall“ Prefab
6. Observe the crash
Reproducible with: 6000.0.11f1, 6000.0.58f1, 6000.2.6f1, 6000.3.0a1
Could not test with: 6000.0.10f1 (413673acabac), 6000.3.0a2, 6000.3.0b3, 6000.4.0a1 (Could not solve local package/plugin namespace errors)
Reproduced on: Windows 11
Not reproduced on: No other environment tested
Notes:
If a Prefab is open before entering Play mode, no crash occurs
Any Prefab can be opened to reproduce the crash
The crash did not occur after transferring the project contents to a fresh project
First few lines of the StackTrace:
0x00007FF8201BC5B2 (mono-2.0-bdwgc) mono_traverse_object_internal
0x00007FF8201BCE52 (mono-2.0-bdwgc) mono_traverse_objects
0x00007FF8201BDD24 (mono-2.0-bdwgc) mono_unity_liveness_calculation_from_root
0x00007FF80CDE1DF9 (Unity) ProcessMonoBehaviour
0x00007FF80CDE0364 (Unity) MarkDependencies
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