On newer Flatpak versions, this will grant access to the X11 socket only when running in an X11 session, and not in a Wayland session with an XWayland server present.
Older Flatpak versions will continue to behave as before.
On newer Flatpak versions, this will grant access to the X11 socket only when running in an X11 session, and not in a Wayland session with an XWayland server present.
Older Flatpak versions will continue to behave as before.