Reproduction steps:
1. Open the attached "repro_IN-84472" project
2. Open the "Assets/TriLib/TriLibSamples/AssetViewer/AssetViewer.unity" Scene
3. Enter the Play Mode
4. Press the "Load Model from File" button and select the "Assets/TestModel/Gebaeude_LOD2_Blatt1056.obj" file
5. Once it loads, open the "Memory Profiler" by going to the "Windows -> Analysis -> Memory Profiler"
6. In the "Memory Profiler", press the "Capture New Snapshot" button
7. In the "Allocated Memory Distribution" section, observe the memory distribution

Expected result: There are no "Untracked" memory
Actual result: There's a big chunk of "Untracked" memory

Reproducible with: 2021.3.44f1, 2022.3.49f1, 6000.0.22f1

Reproducible on: Windows 10 (22H2)
Not reproducible on: No other environments tested

Notes:

• Reproducible in Player
• “TriLib” does not use native plugins to load the sample model nor does any allocations with “Marshal.AllocHGlobal”