Package: firefox Version: 78.0.2-1 Followup-For: Bug #960645 This bug is all the more important now that Gnome launches over Wayland by default. And more so again in COVID times when we're using video conferencing more heavily.
There's more discussion of the issue at https://bugzilla.mozilla.org/show_bug.cgi?id=1430775 https://github.com/emersion/xdg-desktop-portal-wlr/wiki/Screencast-Compatibility