That's interesting. I've been happily using firefox-gtk2 and it's been working quite reliably. Not only I haven't had any issues with it so far, it even looks

That's interesting. I've been happily using firefox-gtk2 and it's been working quite reliably. Not only I haven't had any issues with it so far, it even looks better than Arch's official package (that's built with gtk3). The issues have been present with gtk >= 3.20, and they should be fixed with release 50 and 51: https://bugzilla.mozilla.org/show_bug.cgi?id=1266914 https://bugzilla.mozilla.org/show_bug.cgi?id=1266914 https://bugzilla.mozilla.org/show_bug.cgi?id=1264079 https://bugzilla.mozilla.org/show_bug.cgi?id=1264079