There's work to use Gnome client-side decorations for the title bar here, which should help with screen real estate: https://bugzilla.mozilla.org/show_bug.cgi?i

There's work to use Gnome client-side decorations for the title bar here, which should help with screen real estate: https://bugzilla.mozilla.org/show_bug.cgi?id=1283299 https://bugzilla.mozilla.org/show_bug.cgi?id=1283299 It probably won't land in time for 57, but hopefully soon!