When it asked me to verify email, workona tab was frozen and I couldn't even open gmail in other tab. When I tried to verify mozilla warned me about http website only, final site was https - not sure if this is a problem. It is completely bugged, I moved tabs to workspace I created. And now I can't switch to that Firefox Window, if I click on it, it flashes and disappear instantly. I have to click multiple times, before it switches to it and when I press ctrl+t it creates new windows instead of tab...