Wayland is not the issue. Already checked the obvious. And there are no issues using Wayland for gaming, that is simply not true anymore.
In fact Wayland is causing me less problems with gaming than X11 ever did, especially considering screen tearing. Switched to Wayland because of FPS issues caused by X11.
Things I already checked:
Problem persists in both X11 and Wayland.
Launcher is running in opengl which seems to be related to the problem, running using dxvk does not garble the GUI just makes the web components flash and basically unusable.
Disabling dxvk results in the same problem as forcing openGL.
I solved this myself. Didn’t realy change anything, but it has to do with the fact that the Epic Launcher creates a core 4.4 openGL context but uses deprecated functionality of openGL that requires compatability mode.
Basically, bad coding practices from epic. -_-
So what actually solved this was I eventyally was able to grab hold of the window edge and resized it, somehow that fixed the broken rendering.