I was mad when I upgraded Firefox and suddenly I couldn't see the boundaries between my tabs anymore. I have a lot of tabs. Glad to see that there is a trick in

I was mad when I upgraded Firefox and suddenly I couldn't see the boundaries between my tabs anymore. I have a lot of tabs. Glad to see that there is a trick in Firefox 91 to restore the old style, otherwise I would have just stayed on Firefox 89 forever. Interesting that CSS is used to style the browser chrome. Another thing I didn't like after upgrading to FF89 was overscrolling, but fortunately once I figured out the term itself (which took a good bit of Googling as the effect is hard to describe) it was easy to disable. Recent updates to Firefox have made me pretty unhappy with Mozilla, though. Really not a fan of major UI changes happening between updates with no warning. They should make it easier to revert to the old UI.