As long as KDE Plasma is using X11, that’s not surprising. It appears that GNOME 47/Wayland/Mutter that’s the problem. Something has changed that keeps that combination from working from F40. I found that forcing gdm (and GNOME) back to using X11 still works with F41.
@computersavvy rightly noted in my thread on my problem (F41/Wayland/nouveau/NVS3100M combo fails to display GDM login screen) that the 340 series nVidia drivers that supported my card in F40 and earlier don’t support Wayland.
What I’ve not been able to get an authoritative answer to is the question of the nouveau driver supporting Wayland. If it does, are there any hardware dependencies that go along with it.l
If nouveau is supposed to support Wayland with our older nVidia GPUs, then this certainly is a bug. And if not, then you’re right that some note should be made for that.