As title says. Tried with all heroes in game. HP & mana bar is black until hero dies, at which point everything seems to go back to normal. (HP bar is displayed as would be expected, including the red with timer, etc while dead. After the hero dies, all heroes in the game have hp/mana bars displaying correctly, as would be expected)

Searched, found no related issues. Dunno if this is the new patch or what.

>>Update: on attempt to recreate the glitch, everything worked/appeared as normal, so perhaps this was a one-time affair.