Canonical reverted their decision, but Valve still looking for the "new home". I smell more then technical issues.
One game for instance, will start with the games display rectangle offset by the gnome top bar under wayland but not in xorg. Another game but the same publisher has the same issue in xorg but not wayland. Another by the same publisher again relied on a dependency that got removed from the base distro between 16.04 and 18.04.
I'm not sure if any other distros are better, but I've seen issue like this sit in the ubuntu bug tracker for years before getting closed with no resolution, switching users for instance doesn't seem to have worked for the better part of a decade.