Steps to reproduce:
1. Create a new Unity project
2. Add the {{com.unity.cloud.gltfast}}package through Package Manager
3. Download the “user’s attached 3D model file”
4. Drop the file into the Project window
5. Observe the crash

Reproducible with: 6.10.3, 6.11.0, 6.12.0 (6000.1.5f1), 6.12.1 (2021.3.52f1, 2022.3.62f1, 6000.0.50f1, 6000.1.5f1, 6000.2.0b4)

Reproducible on: macOS 15.3.2 (M1 Max), Windows 10 (22H2)
Not reproducible on: no other environment tested

Note: After importing the model, sometimes the Editor crashes when reopening the project

First few lines of StackTrace:

{noformat}#0 0x00000104c64d28 in block_locate_free
#1 0x0000010267fda4 in DynamicHeapAllocator::Allocate(unsigned long, int)
#2 0x00000102682f08 in MemoryManager::Allocate(unsigned long, unsigned long, MemLabelId, AllocateOptions, char const*, int)
#3 0x00000102682490 in malloc_internal(unsigned long, unsigned long, MemLabelId const&, AllocateOptions, char const*, int)
#4 0x000001022ac698 in UnsafeUtility::Malloc(long long, int, NativeCollection::Allocator, ScriptingExceptionPtr*){noformat}