Since today there is a severely unwanted feature included in firefox: the list all tabs button. It is ugly, bloated and gets in the way. There does not seem to be a reasonable way to remove this "feature". I find the inclusion exceedingly intrusive and grating. How do I roll back to a previous version of FF? I was quite happy with my minimalist bars and this button takes up an excessive amount of space without providing ANY useful function. Preferably I would be allowed to remove the button entirely, but until then I would like to look at a UI that doesn't take up excessive space for no reason. Focusing on making my experience with Firefox worse is not a winning move.