Ok so last night I ran Murozond and found the same 'problem' again, took screen shots, edited them, then proudly posted them this morning to show what I was talking about ... then had a DOH moment! Turns out I was looking at the mana value in the box next to the minimap in white and seeing 100% instead of looking at the health percentage on the left of the box in green. Needless to say, I feel like a right git about now, and I smartly removed my post to hide my shame.
Sorry about the false bug report Xrystal.