I will have to post the screenshot when I get home, but before I forget and I have a sec at work I wanted to post what happened.
I was playing as the rook and had the archer/tower of light upgrades. I was battling a bunch of creeps and one hero, when all of a sudden the damage/heal/annoucement text froze on screen and would not disappear.
This caused all the pop up diagloaf boxes to no longer appear. It is quite interesting. I haven't seen any other posts (although I have to admit I didn't search for it) so apologizes if this has been posted before.