How to reproduce:

[Short repro]

1. Switch between Lit, Unlit Mesh, Quad, Lit Quad outputs multiple times, ~10 should be good
2. Along the way while switching change some random settings in Output Inspector
3. Click Output Inspector then click on the graph view empty space continuously until you notice editor starts freezing and then crash

[Long repro]

1. Open the attached project
2. Convert Lit Mesh to Lit Mesh (yeah, lit mesh)
3. Convert to Unlit Mesh (Observe inspector - It is a scriptable object of VFX Mesh Output; now take a look at the Output name - it says Lit Mesh Output)
4. Convert Unlit Mesh
5. Convert to Unlit Mesh
6. Convert to Lit Mesh
7. Convert to Unlit Mesh
8. Convert to Lit Quad
9. Convert to Mesh
10. Check Transparent Depth Prepass in theInspector
11. Check LOD box in the Inspector
12. Undo everything
13. Click Lit Mesh Output
14. Click in Graph View empty space
15. Click Lit Mesh Output
16. [repeat 14-15 actions until it crash the Editor]

Obtained 3 stack frames.

#0 0x00000106577544 in VFXMemorySerializer::StoreObjects(dynamic_array<PPtr<MonoBehaviour>, 0ul>)

#1 0x0000010657894d in VFXMemorySerializerBindings::StoreObjectsToByteArray(dynamic_array<PPtr<MonoBehaviour>, 0ul>, CompressionLevel)

#2 0x000001042f940c in VFXMemorySerializer_CUSTOM_StoreObjectsToByteArray(ScriptingBackendNativeArrayPtrOpaque, CompressionLevel, BindingsArrayHandleOnStack)

Note:

• Crash is consistent but reproduction is quite unpredictable
• Visuals of repro are in the attachments section