This new UI is honestly baffling to a point where I dont understand how someone was paid to design this. No borders or divider between tabs, lots of wasted space, and aesthetic choices I really take issue with. Most notably in this regard the tab not being connected to the web page I'm on, but the way the browser looks when you have many tabs open just makes my head hurt. I get some people enjoy it, but I dont and I dont understand why I'm forced to use it instead of having an option to enable/disable it. I really dislike the removal of functionality as well in order to make it more "streamlined." "Fewer interruptions: Reduced number of alerts and messages, so you can browse with fewer distractions." I also don't understand this line directly from the update page. Why wouldn't I want to be notified of something? If I didn't want to be notified, I would close the tab or disable the notification. It is like they are creating problems to then solve with silly solutions when it was never a problem in the first place. It genuinely feels like much control and decision making was taken away from the end user. I really enjoy firefox and have for years, but I am unsure that I am willing to continue using it after this update.