Reproduction steps:
1. Create and open a new 3D Core project
2. Drag and drop the attached “mobs_json.fbx” file into the Project window
3. When the import dialog box appears, attempt to move the Unity Editor window
4. Observe the crash

Reproducible with: *2021.2.0a3,* 2021.2.0b1, 2021.2.0f1, 2021.3.31f1, 2022.3.10f1, 2023.1.16f1, 2023.2.0b12, 2023.3.0a7

Not reproducible on:  2019.4.35f1, 2020.3.48f1, 2021.1.28f1, *2021.2.0a2*

Reproduced on: Windows 10 Pro, Windows 11 (by reporter)
Not reproducible on: No other environment tested

First few lines of the stack traces:
0x00007ff7470040cd (Unity) ConvertFBXMesh
0x00007ff74700d5df (Unity) UnityFBX::RecursiveImportNodes
0x00007ff747004f0a (Unity) UnityFBX::ConvertFBXSceneToImportScene
0x00007ff747009b27 (Unity) UnityFBX::DoImportScene
0x00007ff746fbb7a6 (Unity) FBXImporter::DoMeshImport

0x00007FFBE4D77927 (Unity) core::hash_set<core::pair<unsigned int const ,UnityErrorHandlerManager::UnityErrorHandle,0>,core::hash_pair<core::hash<unsigned int>,unsigned int,UnityErrorHandlerManager::UnityErrorHandle>,core::equal_pair<std::equal_to<unsigned int>,unsigned int,UnityErrorHandlerManager::UnityErrorHandle> >::resize
0x00007FFBE67E7354 (Unity) core::base_hash_map<ArtifactKey,AssetDatabase::ArtifactID,core::hash<ArtifactKey>,std::equal_to<ArtifactKey> >::emplace<ArtifactKey const & __ptr64,AssetDatabase::ArtifactID const & __ptr64>
0x00007FFBE685D4F7 (Unity) AssetResolveTracker::Track
0x00007FFBE687E7AF (Unity) AssetResolver::TrackLoadedAsset
0x00007FFBE681C401 (Unity) TrackLoadOfPrimaryImportedAssetV2

0x00007FFCE4F534F6 (ntdll) RtlWaitOnAddress
0x00007FFCE4F1FCB4 (ntdll) RtlEnterCriticalSection
0x00007FFCE4F1FAE2 (ntdll) RtlEnterCriticalSection
0x00007FF7F9FAD59E (Unity) AssetResolveTracker::Track
0x00007FF7FA007A9F (Unity) AssetResolver::TrackLoadedAsset