It successfully gets rid of that disgusting pitch black they forced on us, but not the rounded tabs. Randomly forcing UI changes on your users without a way to revert it is straight up an accessibility issue for many autistic people and others unable to cope with change (including me), and still unpleasant for just about everyone else. Man, I wish I had Reddit or something so I could complain somewhere where someone'd actually see it....

Please make the tabs square as in the preview. Or at least make it an option in Settings for the former (totally functional) tab design

Don't like that it makes the homepage grey as well in dark mode. Would like for it to remain the new black that's across Firefox now for a more consistent experience. It also doesn't change the theme when adding or editing bookmarks. There's still those gradients there.