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
Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-06-18 21:33, hash: rBf9aea19d9890
Short description of error
I have a foreground grease pencil object, and a background grease pencil object (yellow blob).
The foreground object contains a layer set to 0 opacity.
Where this layer overlaps the background object in the viewport, the background object is invisible.
Expected behaviour: the visibility of the background grease pencil object isn't affected by transparent layers in a foreground object.
Exact steps for others to reproduce the error
Foreground object "makes hole" in background, doesn't blend. Rotate viewport camera, suddenly it blends correctly.
When foreground location is set to 0,0,0 it blends correctly too.