I've been trying to reply in this other topic, instead of opening a new one, but it's been impossible https://support.mozilla.org/en-US/questions/1231729 I have the exact same problem as jeffcompton there. In older versions of FF (older as in "before the engine change" old), hovering the mouse over the menues would expand the submenues automatically. Now you need a bunch of clicks to get where you want. At least the old menu bar (File - Edit and so on) still behaves the old way I understand that this behaviour is better for cellphones and touchpads and all that, but maybe, if there was a way to add the option in about:config, that'll help the goold old desktop users like myself. I don't know if that feature is even possible with this Photon thingy. I've uploaded a small gif showing what I mean, no click - no menu