On Thu, 1 Feb 2018 10:40:46 +0100 Sylvestre Ledru <sylves...@mozilla.com> wrote: > Wayland support for Firefox is considered as basic from fx59: > > https://bugzilla.mozilla.org/show_bug.cgi?id=635134#c86
That explains it. Verified that Firefox works on GNOME/X11, enforcing GDK_BACKEND=x11 doesn't help either with wayland. Seems I need to wait for newer Firefox versions and use X11 meanwhile.