Reproduction steps:
1. Open the 'ReflectionProbeTest' project
2. Open the SampleScene
3. Add a new Reflection Probe into the Scene
4. Bake the Reflection Probe
Expected result: the Reflection Probe reflects the skybox
Actual result: the Reflection Probe is black
Reproducible with: 7.7.1 (2019.4.32f1), 10.8.0 (2020.3.23f1), 12.1.1 (2021.2.3f1), 13.1.0 (2022.1.0a15)
Note: to reproduce the issue the 'Blit' Renderer Feature in the Universal Renderer has to be enabled and the 'Event' setting has to be set to one of those modes: 'After Rendering Skybox', 'Before Rendering Transparents', 'After Rendering Transparents', 'Before Rendering Post Processing', 'After Rendering Post Processing', 'After Rendering'