I don't know if I created the debacle or not, but I had a broken KDE/QT install as a result of migrating away from plasma/wayland/lxqt. The file in question was /etc/env.d/79qt that set wayland-egl. I cant find it in pfl, and I'm not going to try and recompile all the packages to try and reproduce. I grep'd logs and found nothing, so I think I might have caused the breakage...