I just installed the latest version of Firefox and now I'm facing a new problem. When I try to open a new tab I have to double click on top bar and it's annoying me. I used to open a new tab by clicking on an icon next to any tab and now that icon is moved to the right corner at the top, and it appears there is no way to open a new tab except by double click at the top! How can I return this icon to previous place to open a new tab just by one click. Thank You