I've seen a lot of annoyed users because in the last update of firefox (65), the tabs bar got up to the top and we couldn't get it back to the bottom because ff changed something that messed our already fine tuned userChrome.css configuration. When is firefox going to let us put that tabs bar where we want again?? I already found a workaround to fix this, but seriously firefox, why do you do this to us????? i'm a long time FF user and i've been supporting it for years, but in the last updates, FF is becomming more and more closed, something that IMHO, is against the philosophy of FF. I hope one day Mozilla understand that some of us (not few by the way) prefer the tabs bellow and let us customize them as we want... again.