The implementation is awesome, Thank you, Firefox team!, now I would like to have a better transition between "only bookmarks toolbar in new tab page" so bookmarks toolbar don't take space of the sidebar with vertical tabs enabled and when disappears...
Yes! it will be amazing if we can even reduce more the width of vertical tabs so the sidebar use even less space also amazing job now that the title bar dissapears when vertical tabs are activated i wish it keeps like this in the future!.
