League disconnects (on Odyssey mode), then you can't get back into the game at all.
I really tested Odyssey mode, tho. And for whatever reason, league decided I'm having too much fun and then entirely decide to disconnect me for whatever reason. Then I see people just stand around the area right there for the rest of the game. I think it's because of this kind of client/gameplay issue that sometimes I don't want to play the game mode because of that kind of stress it puts on players.
Riot please fix this bug, It will do more players harm then good if you don't fix this issue right away whilst doing missions. I seem that no one is actually talking about this. It happened to me way too many times and I seem to notice that a lot when playing the game mode (no matter what level I'm in.)
