System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 457.30
Blender Version
Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-05-14 01:08, hash: rBbd76184966ad
Short description of error
When I change viewpoint to camera the viewport is entirely black. Even though my scene contains only a camera (nothing to block its view). The blackness seems to be the passepartout, i don't understand why it's covering the entire viewport though.
Exact steps for others to reproduce the error
Open attached blend
Press numpad 0, the viewport turns black.