I was forced to switch from manjaro to fedora at work a year ago (we were forced to pick between Ubuntu or Fedora) and I miss it. Things break more often on fedora, I now even lag 1 release behind so that I don’t have to deal with breaking updates. I didn’t have any problems with manjaro. Still use it at home
Most common are probably issues with login screen, e.g. not updating it, not showing login field input. I use x11+kde, same as it was on manjaro