I still have the same issue using 9.2.18 on both client and server on Fedora 42 and Wayland, I can connect to an existing session and I can move the mouse and click and interact, but the screen on my client is completely black:
drukob@icecube:~$ ls -l /etc/xdg/plasma-workspace/env/ total 28 -rw-r–r–. 1 root root 508 Feb 15 2025 env.sh -rw-r–r–. 1 root root 299 Jan 17 2025 fedora-plasma-cache.sh -rw-r–r–. 1 root root 644 Feb 15 2025 gtk2_rc_files.sh -rw-r–r–. 1 root root 175 Feb 15 2025 gtk3_scrolling.sh -rw-r–r–. 1 root root 52 Jul 3 02:00 ksshaskpass.sh -rw-r–r–. 1 root root 42 Nov 10 23:57 nx-sourceenv.sh -rw-r–r–. 1 root root 109 Feb 20 2025 ssh-agent.sh drukob@icecube:~$ sudo getcap /usr/bin/kwin_wayland –> no output drukob@icecube:~$ echo $XDG_SESSION_TYPE wayland
Attached the logs (had to seperate and split server.log due to size limitation), my config