How to reproduce:
1. Open the attached project "IN_21452"
2. Open "SampleScene" in Scenes
3. Press "Toggle skybox, fog, and various other effects"
4. Disable Post Processing
5. Observe the Scene view
6. Enable Post Processing
7. Observe the Scene view

Expected result: Post Processing visible in the Scene view
Actual result: Post Processing not visible in the Scene view

Reproducible with: 2022.2.0b11, 2022.2.0f1, 2023.1.0a20
Not reproducible with: 2020.3.42f1, 2021.3.14f1, 2022.1.23f1, 2022.2.0b10

Reproducible on: Windows 10 pro

Workaround:
1. In Assets press Settings → “Universal RP-High Quality Universal Renderer”
2. In the Inspector change “Upscaling Filter” to “FidelityFX Super Resolution 1.0”