User blog comment:Rupert Giles/Global Navigation January Update/@comment-4061770-20150130193552/@comment-1038387-20150130194345

That was a problem the old bar had as well, especially on tabbed browsing. That was even worse as it covered the entire width of the screen. I can't remember how many times, while editing across multiple tabs, I ended up clicking the Tea Wiki instad of the edit button.

TBH, I tried it, and the tab doesn't open on mouseover - it opens a second or so after. You can move over it to the back button without triggering the drop down.