Been trying to snap some screenshots of when this happens.

Here is when it's blank, you can see I'm in combat by the text, but it still hasn't reset yet. Yes I'm in an instance, but this cleared up to show EPL after a few seconds wait:

http://i291.photobucket.com/albums/l...709_211826.jpg


Here is when I am deep within Sholazar, but it still shows Icecrown - minimap is reading Wildgrowth Mangal. You can see my player arrow as well:

http://i291.photobucket.com/albums/l...009_210635.jpg



And another in Dalaran. Yay mailboxes n stuff! :

http://i291.photobucket.com/albums/l...11-17-38AM.png