$ dnf list installed "*Xwayland*"
Installed Packages
xorg-x11-server-Xwayland.x86_64 21.1.1.901-1.fc34 @updates
Ok, I don’t have enough experience with KDE to know how to disable Xwayland, how to check, or how to turn it back on. However, this is getting a bit outside of the ROOT realm since it appears to be working on a default installation of the Fedora KDE spin, so I’m not sure anybody here can really help you, sorry.