How to reproduce:
1. Open the attached “NormalThreadBug.zip“ project
2. Open the “Assets/Scenes/driver.unity“ Scene
3. Enter Play Mode

Reproducible with: 2021.3.36f1, 2022.3.23f1, 2023.2.0a14
Not reproducible with: 2023.2.17f1
Fixed in: 2023.2.0a15
Couldn’t test with: 6000.0.0b13 (“error CS0234: The type or namespace name 'NET' does not exist in the namespace 'Microsoft'“ error in the Console)

Reproducible on: macOS 14.4 Sonoma (Intel)
Not reproducible on: No other environment tested

Note: Sometimes the crash also reproduces when exiting Play Mode

First few lines of the stack trace:
#0 0x0000015c83ff8f in mono_push_other_roots
#1 0x0000015c87309a in GC_mark_some
#2 0x0000015c872797 in GC_stopped_mark
#3 0x0000015c87248e in GC_try_to_collect_inner
#4 0x0000015c87453b in GC_collect_or_expand
#5 0x0000015c87479f in GC_allocobj
#6 0x0000015c86ee93 in GC_generic_malloc_inner