The damage indicator gets permanently stuck on your screen almost every game. I've even had 2 or 3 stuck up there, and they don't go away unless you restart the game. The bug happens so often, there's not really a point in restarting. I've asked people in every game and almost everyone says they have the same bug, and it's often the same indicator for everyone - ie, all of the same hero. In the last 2 hours of playing, I've yet to go 10 minutes without encountering the bug.