How to reproduce:
# Unzip the user attached project “Str_TPC.zip”
# In “RunRepro.py” alter the line which says “unityExe = r'D:\Editors\2020.3.25f1\Editor\Unity.exe'“ to point at your Unity.exe version folder
# Run the “RunRepro.bat”

Expected result: no crash
Actual result: crash

Reproducible with: 2020.3.39f1
Not reproducible with: 2021.3.9f1, 2022.1.14f1, 2022.2.0b5, 2023.1.0a6

Reproducible on: Windows 10 (Intel)

Note: You should see output similar to this (it should take about 30 minutes to run):
Built from '2020.3/staging' branch; Version is '2020.3.25f1 (9b9180224418) revision 10195328'; Using compiler version '192528614'; Build Type 'Release' at 0.1 minutes

First lines of stack trace:
0x00007ff6f486d4b8 (Unity) PackAtlases
0x00007ff6f486d0b6 (Unity) PackAtlasOnJob
0x00007ff6f486ff65 (Unity) PackSpriteAtlases
0x00007ff6f51a0b02 (Unity) SpriteAtlasUtility_CUSTOM_PackAtlasesInternal