How to reproduce:

1. Open the “IN-19623” project
2. Open the “Main Scene” scene
3. Enter Play Mode
4. In the Hierarchy select the “Main Mesh(Clone)” GameObject
5. Add the “Mesh Editor” Component script
6. Click the “Recalculate Tangents” button in the “Mesh Editor”
7. Observe the crash

Reproducible with: 2021.3.13f1
Could not test with: 2020.3.41f1, 2022.1.23f1, 2022.2.0b15, 2023.1.0a19 (compiler errors I couldn’t fix)

Reproduced on: Windows 10 (Intel)

First lines of stack trace:
0x00007ff6bf1aa1d9 (Unity) Mesh::RecalculateTangents
0x00007ff6bcd1b23f (Unity) Mesh_CUSTOM_RecalculateTangentsImpl
0x00000216581aeedc (Mono JIT Code) (wrapper managed-to-native) UnityEngine.Mesh:RecalculateTangentsImpl (UnityEngine.Mesh,UnityEngine.Rendering.MeshUpdateFlags)
0x00000216581aeda3 (Mono JIT Code) UnityEngine.Mesh:RecalculateTangents (UnityEngine.Rendering.MeshUpdateFlags)
0x00000216581aed1b (Mono JIT Code) UnityEngine.Mesh:RecalculateTangents ()