I've read that even screenshots may be a problem under Wayland. But I tested it in Sway, works perfectly (
grim -g "$(slurp)" - | wl-copy).
The only problem is Skype. I can not show my screen. And the only solution I found was to switch to Xorg.
Is it a problem of Wayland? Or it's all right with Wayland and there are just no apps that can do that?