Spectator Bug (Volibear?)
So I'm not sure if this is just spectator or a problem with the champion. But I was spectating a game and when I looked over at Volibear's passive to check if he had used it, the description on it called it Bad Passive and the description was BadDesc.
EDIT: Spectated another game. Tahm's Passive has a similar problem. It's name is there, Acquired Taste, but the description just says BadDesc.