I can always be a tester for it! I only use linux on my PC
I'm not sure of the exact source issue here, but my suspicions lie in the fact that it may be a graphics driver issue, Godot's Forward+ render pipeline leverages vulkan, if your drivers/build do not support vulkan and only support OpenGL, then that could be part of the problem, luckily godot has a compatability renderer, which i could try and put out a compatability build to see if that would help any