Somehow with XWayland enabled, the app still specifically demanded an actual X11 session
I guess it’s because Horizon can probably act as a host to control the desktop and as client to control other desktop. The latter should work with XWayland, the former not. As I wrote: RustDesk works just fine. What RustDesk doesn’t currently offer with Wayland is unattended access. The desktop that’s about to be remote controlled gets a question to confirm remote access, at least under Gnome.
My somewhat educated guess is that it’s more likely that Gnome’s permission system gets a “always allow remote access” button before a X11 application gets a Wayland port when the decade until now a Wayland port was no priority.
I guess it’s because Horizon can probably act as a host to control the desktop and as client to control other desktop. The latter should work with XWayland, the former not. As I wrote: RustDesk works just fine. What RustDesk doesn’t currently offer with Wayland is unattended access. The desktop that’s about to be remote controlled gets a question to confirm remote access, at least under Gnome.
My somewhat educated guess is that it’s more likely that Gnome’s permission system gets a “always allow remote access” button before a X11 application gets a Wayland port when the decade until now a Wayland port was no priority.