Possible PotD Glitch

Question for those in the know. Ever since patch 3.45 every time I open my inventory while in the Palace of the Dead I lose my Mini Map and all the information associated with it. Is this normal and if so how do I restore it? Pressing "M" has no effect. If not then this is information for the Devs. I reported this through the GMs but have not received any response. Any information you can provide will be appreciated.

This had me stumped for a little while too. In the potd map there is a padlock icon. You might've accidentally clicked on it like I had. Locking will keep it up at all times :)

Thank you. I will try that the next time i am in PotD.

Edit: that was the problem and the fix. Did not know it would have that effect. Again Thank You.