When the game ends that you're spectating you cant leave, sometimes avatars dont show up when you spectate, and sometimes you click the spectate button and nothing happens. Quite annoying as the only real solution is to restart the game and that gets old very quickly.
i get this problem too. the main thing is clicking a game to spectate it and nothing happens, the problem is intermittent though and i have managed to spectate some games. sometimes when te game has ended you do not get back to the lobby and cant leave.