Reproduction steps:
1. Open attached Project
2. Press Play
3. Press Blit To Back
4. Build and Run
5. Press Blit to Back
Expected result: The Behaviour is the same
Actual result: The Editor fails to Render, while the Player successfully Renders
Reproducible with: 2020.3.14f1, 2021.1.16f1, 2021.2.0b4, 2022.1.0a3
Could not test with: 2019.4 (Compiler errors)
Notes:
DirectX or Vulkan fail to render in both the Player and Editor
OpenGL works in the Player
Rendering works if the Scene starts with Blit To Back, instead of Switching to Blit To Back after being started (This can be changed on the Script on the Main Camera)