update: i attempted to replace the current version with firefox 60.3.0 esr, but this feels like going one step forward and two steps back..

Hi,

You can go back to the previous behavior by opening the Firefox preferences, and unchecking the "ctrl+tab cycles through tabs in recently used order" option in the "tabs" section.

Hope that helps!

Thanks a lot, this was just what i was looking for!

What't the recommended method for preventing these types of UI changes to firefox? Is there a particular mailing list we need to join or particular web page we need to check? It would be great, instead of wasting so much time on bells and whistles like this one, that time be spent keeping the Options pages updated so that the meaningless changes that do get applied to Firefox have a 'reset to normal' button.

In fact, you should not allow any UI changes, like the zoom indicator in the address bar, without a 'hide this UI element' button in the Options. If we were to start a list of things that you haven't quite mastered yet, it would start with the UI, since 100% +/- 0.0 percent of web users are not CSS programmers, therefore any response that begins or ends with 'just do it in userChrome.css' is an admission of failure. There are currenly only four things that are actually mandatory to run Firefox on Windows, Linux or Android, and those are the upper left corner, upper right corner, lower left corner and lower right corner of the window. Everything else /is/ under your control, so if you tell us that 'we can't move XXX UI element because BLANK....then you don't understand this.