Reproduction steps:
1. Open the attached project
2. Navigate to Assets
3. Open the "Testing scene.unity" scene
4. Built and run the project
5. Use development console or output log to view the error (RenderTexture.Create failed: format unsupported - 9)

Expected results: RenderTexture should be created without error.
Actual results: Rendertexture gives error on console/log.

Reproduced with: 5.5.0b4 (this version only supports Vulkan)