Up until FF31, I used to have the following setting configured which moved the little 'X' button that closed tabs off of the tabs themselvs and onto the far right of the tab bar. browser.tabs.closeButtons; User Set; Integer; 3 No, this no longer works. It has still moved the close buttons back to the tab buttons. Until I can figure out how to fix this, I will be moving back to a previous version. I can't for the life of me see why this feature was removed, other than Mozilla's seemingly arrogant insistence that it knows what people want better than they do. I was since told by someone that I can use an addon to fix it, yet the problem is THEY DO NOT WORK. The addons that supposedly solve this all have intermittent failures where they don't load correctly, leave random dead tabs open, and in one case it even seemed to open new tabs when I tried to close one. It's absolutely inexcusable that the dev team is so arrogant to take away a feature that has fundamentally no impact on the rest of the browser, other than, as I said before, they THINK they know what we want better than we do. It's no small wonder that FF is losing market share. The only thing keeping me on board was really this function, as I prefer this layout, and if it's gone, I see no reason to stick with FF over others.