What: User Interface
This (before Firefox 29):
Was much better than this:
Instead of having the useful dropdown and inspector icons on the annotation box itself, you now need to move the mouse cursor to the markup in the HTML pane way down below and right-click with the mouse to see the options to copy inner or outer HTML, edit HTML, etc.
Paul Fitts would be pissed off.1
I am, too. Fortunately, Bugzilla exists.