In the Firefox window the minimize/maximize/close icons do disappear and then come back. During on same session. Weird. When disappeared, no way to minimize/maximize or exit the full screen mode. It appears they do reappear only when triggering an additional tab… (!). No such behaviour with other windows.
An explanation? A solution?
I’m puzzled.
W
A lot of weird Firefox behavior ends up being extensions. Try restarting Firefox in Safe Mode with them all disabled and see if that helps. If you go to about:support , there’s an option for Safe Mode.
It didn’t solve it. My guess is that the problem is elsewhere.
If I close FFox and relaunch, then it is there… but soon will have disappeared when toggling to another and coming back to FFox