You have left channel: Game

I've been running ubers and minding my own business as I get this weird message I've never seen before: "You have left channel: Game". Any ideas what's all about?

I get that message everytime I go from the lobby to a game. Usually only once though. I don't recall seeing it multiple times in a row like that. Probably a bnet quirk.

You leave game chat as you head back out to lobby. On occasion, you will have that message not pop up until (or pop up again when) you enter the next game. Additionally, as you scroll through past chat, it may or may not appear in there in-game (cuz..consistency is overrated).

On top of that, you may have actually been kicked out of the in-game chat within that game, seeing how D2:R has had multiple chat bugs (including that) since day 1 and blizz never bothered to fix a single damn thing about it.

Usually comes paired up with not being to see what people (including yourself) say in chat even though it says you are "connected" to the game chat.

Tends to fix itself when you exit to desktop and start d2 again.