They have also added a lot pop-ups, incredible amount of JS, suggestions to login (I use it mostly in incognito) and install their mobile app (if you use it on mobile). Such a mess.
Firefox Debugger is amazing, but I have some problems with performance. If I enable DevTools, then entire browser (other tabs too) hanging for 1-2 minutes while page with DevTools is reloading. I think it may be because a lot async calls were performing, about couple hundreds (we use RequireJS and every sourcefile loaded through different request).
It would be great, if you can pin your contributions also. For example, If I create organization for experimenting with stuff and contribute a lot to its repos, my contributions are overwhelmed with experimental stuff. Kinda sad.