Most comments have been positive, so I'm gonna list all my issues. Using endeavours with KDE 6.2 and the AUR explicit sync patch, 5800 ryzen CPU and 3080 NVIDIA GPU.
The discord xwayland app can't share screen, and the waycord app that fake chromiums the web interface that let's you share screen has the sound bug out sometimes with large sound spikes. So if I want to share the screen I have to open the second app and then close it fast to minimize the chances I annoy my friends.
Window positioning. It almost seems a flagship Wayland issue. I would love if apps remembered on which screen and position I left them the next time I open them, telegram opens in the middle of the primary monitor, and I have to drag it to the right of the secondary one every time I switch on the PC.
Shutting down in any way that is not opening the console and typing reboot or "shutdown now" takes way way longer and sometimes bugs out. This might not be a Wayland issue, but a KDE one.
The tdrop program that let's you interact with any terminal as if it were a dropdown terminal doesn't work in Wayland, and it just isn't the same to open a terminal in the normal way, is lame. Foot is a good terminal for sure but I want the dropdown effect.
I can't think of anything else right now, most explicit sync issues I had were fixed with the AUR patch, so of anyone has those issues wait until the real patch comes around and they will get fixed. It was quite annoying without the patch though, some programs glitched visually hard and several games were unplayable due to the heavy ghosting (dark souls 2 and dragon's dogma 2, for example). I'll add to this comment if I remember anything else. Even if the issue was recently fixed it's good to have a list of stuff so that people can check it out and confirm that it's fixed, for posteriority.