None, they simply didn’t implement them because the developers decided to concentrate only on Wayland.
For gestures I use libinput-gestures (it also has a GUI in QT).
Unfortunately KWIN does not support 1:1 gestures on X11.
On the other hand, there is an extension on GNOME that allows 1:1 gestures on X11 as well. It is a pity that no one has yet done something similar for Kwin.
1 Like