° Breaking recent add-ons (for the few add-ons that exist). I added a close-tab icon to compensate for the bad tab-ui. It's gone now.
  ° URL-bar hiding is wonkey. Some overlays disable hiding due to recent phising attacks. Now, for overlays, it is always present and hides the bottom of the page. This is very annoying when links are hidden behind the bar.
  ° URL bar (2): where have my bookmarks gone?
  ° URL bar (3): no more editing the URL if anything was *ever* searched in the current tab. Instead it edits the search. The URL is inaccessible. 
  ° After 'Open in new tab' there is an annoying delay for 'Switch' again hiding links.
  ° Tab selection is just bad now. Preview is broken. If anything is displayed, it is often the image of two sites ago, even if the page has rendered.
  ° Tab selection (2) no more moving the tabs?
  ° Tab selection (3) why waste so much space? Using only 80% of the screen. And every tab wastes two lines and a half of useful space. Why is only the domain shown? Why not truncated or cut in the middle? 
  ° Tab selection (4): newly opened tabs are hidden, you always have to scroll up as the current tab is always first, older tabs are lower.
  ° about:config is broken. Certificate error. Certificate error is broken too. Thus no disabling reader mode.