From using GMail I've developed a motor memory of "tab-enter" after editing to send. Writing a page comment in Wiki Markup, the Post button is right beneath the text box and I expect that tab will take me to Post and enter will hit the button.

But instead, tabbing from that box focuses on the Dashboard link and hitting enter navigates there, erasing the comment I painstakingly composed. Which sucks.

Seems like an easy improvement to make without any adverse side-effects.