I just had my librem 13 v3 replaced due to an unrelated hardware issue and this issue , which I had before, and applied some fix in both from the forum has returned with the hardware swap (note: hard disk is same and OS install is the same).
I know whatever I applied also had to be tweaked in qubes as I have both pureos and qubes installed, So I am trying to recall exactly how I had it fixed in both OS's.

@kyle.rankin Thanks using xorg is a good work around for now. Just picking that at login is simple enough I thought it was going to require a more substantial and permanent tweak / swap between wayland / xorg

I have tried several 4k monitors and and 3 OS's (pureos qubes and even windows 10) trying go get 4k on my new machine (it just arrived 5 days ago) and was getting concerned without having any positive results. I am anxiously looking for a way to achieve the 3840x2160 and 2560x1440 resolutions from this machine.