Yes, the live arenas are not only unbalanced, with terrible matchmaking, but they are also buggy. When searching for a game, the game may tell you that it has not found an opponent for you. It then gives you the option to cancel or try searching again. Whichever option you choose, the game goes into an endless search loop where you cannot play other arenas, and if you open and close the game, you lose a Live Arena token. Even if you wait for it to finish, it automatically deducts a token.