Reproduction steps:
1. Open user-submitted project
2. Drag "CapGuy" GameObject from Assets -> Shooter -> Prefabs to Scene
3. Expand "CapGuy" GameObject in the hierarchy
4. Select "Hip" and "Spine_2" GameObjects
5. Try to set Configurable Joint components' Low angular X limit higher than High angular X limit
6. [If Unity doesn't crash] change values of Angular X limit Sprint and High angular X limit and repeat step 5

Expected result: Low angular X limit is set to the same value as high angular X limit
Actual result: Crash

Reproducible with: 2021.2.0b16, 2021.2.3f1, 2022.1.0a15
Not reproducible with: 2019.4.32f1, 2020.3.23f1, 2021.1.28f1, 2021.2.0b15

Note:
Crash rarely reproduces of the first try (~1 in 100)