On Tue, May 29, 2018 at 8:23 PM, Simo Sorce <simo@redhat.com> wrote:
Is screen sharing [at least of its own window(s)] supposed to work ?
If I share the screen with a screen sharing app all I get to send is a
black background, sometimes with the mouse cursor visibile on it.

No, that won't work because there's only X11 support in WebRTC. But the desktop team is working on bringing the Pipewire support to it and once it's finished then it will work