Hi there.
Did some quick poking with my rdna2 iGPU and this is looking like a old driver bug. On Linux i can reproduce the issue when using amdvlk 2024.Q1.3 and all the way back to 2023.Q2.1 which is the oldest i can run the game with.
It looks fine with 2024.Q2.1 and newer so i assume the RX 580 had regular driver support dropped before it was fixed.
Yes, this is a known AMD driver issue that unfortunately is going to pop up every now and then.
Nothing extracted yet.
While performance is vastly superior when using DXVK (the game has weirdly poor performance despite of being pixelart) a lot of the game rendering is outright broken.
DirectX 11:


DXVK:



Software information
Gal Guardians: Servants of the Dark Demo
System information
Log files
Log files were not generated somehow