Client detection error / connectivity [Client]

I was attempting to play a Co-op Vs. AI game with one of my friends and it was loading up fine, when for some reason the game decided to disconnect me at 100% saying that it needed to close. When I reconnected, the game kicked me immediately for being inactive/afk, and I had to reload a third time. I do not know if this is simply an issue with the Mac client not sending information properly when its connected or not but it needs attention.