Operating system: linux open source drivers
Graphics card: rx 6800
Worked: Never (2.83+)
Short description of error
contact shadows dont look correct on certain angles for layered alpha hashed materials(hair cards for example). iissue is more noticable in viewport then in final render, but it is noticable in both.
Exact steps for others to reproduce the error
make a sphere make it alpha hashed and slightly transparent then duplicate and scale geometry with slight offset to make layers then rotate around object with contact shadows enabled on the lamp