Steps to reproduce:
1. Open the attached scene
2. Move the reflection probe left so its bounding box intersects the left wall (still inside the box)
3. Bake using the Generate Lighting button.
4. Notice how the reflection probe is black
5. Move the reflection probe right so its bounding box intersects the right wall
6. Bake using the Bake button on the reflection probe inspector
7. Crash

Note: For some reason this does not reproduce easily when screen-capturing.

Reproduced on:
2021.1.0a8
2021.1.0a9
2021.1.0b1
2021.1.0b5
2021.2.0a1
2021.2.0a4

Did not reproduce on:
2021.1.0a4
2021.1.0a6
2021.1.0a7

2020.2.2f1