Couple of bugs

I was playing the barbarian and all of a sudden my health and fury orbs would be empty. But when I mouse over them, it shows 202/202 for health and 100/100 for fury. Same thing happened when I played with a demon hunter. Both orbs showed empty but hovering over them showed I should be maxed.

Other bug happened while I was playing barbarian. Right after the cut scene where Decard Cain was being attacked from the Skeleton King's minions. When I regained control, the entire screen was black. I used the mini-map and just randomly clicked around until my mouse went over the enemy names and started swinging wildly. Had to start another game to fix.