This is a work-in-progress workaround for the buffer format selection issue on Wayland with Intel Iris GPUs (https://developer.blender.org/D6567#182240).
The workaround enables the alpha channel for the EGL context such that ARGB2101010 is selected instead of XRGB2101010.
The Blender UI is not drawn correctly in this configuration because many colour settings use an alpha value of 0 instead of 1. I was able to trace and rectify some of the colour settings but I was not able to find the origin of colour settings for "3D Viewport" and "Graph Editor". These views, and potentially other UI elements, still use a transparent background.
Could you point me to where the background colour for these remaining views is set?