Wayland-only gestures shown in Keyboard Shortcuts
While most gestures are only made possible by libinput
/Wayland and not implemented under Xorg, the Keyboard Shortcuts window is display server-agnostic, which means that apps like Evince in the Keyboard Shortcuts window show gestures that are not available in the current user session. I'm opening the issue upstream as the conceptual problem of having keyboard shortcuts shown only in a certain type of session (with a flag, possibly) seems better suited to Gtk than to any specific implementation.