Admin behavior on tab change

Starting a new E-mail for a different thread.

I’ve noticed in the admin, when I click on one of the top navigational items, I expect the main portion of the screen to load the first sub-tab but it doesn’t which leads to the awkward user experience of having, say, “Dashboard” highlighted but I’m actually looking at one of the “Comments” pages. Is that behavior on purpose or just some unfinished UI work?