I have to open it every time I want to change tabs, which is both annoying and dramatically reduces efficiency. How can I change default setting so that the tabs are always visible on the side unless I intentionally slide the open tab over to hide them? This, unfortunately, is a big enough issue that I'll need to locate another browser if it can't be fixed.

Alternatively, is it possible to downgrade from the last update? That would work too. I loved FF for Android until this recent change. Thanks!