Client closing itself while alt-tabbed

[agc]

I've had the game close itself numerous times today while I've been alt-tabbed, most recently just a few minutes ago. It's highly frustrating to be sitting in queue for over 20 minutes, alt-tab to look at something, and then when I go back to check the queue the program is no longer running.

 

What's going on?

[Adrianks47]

Same thing here. Only managed to get once in the game yesterday. Today it closed itself 3 times while i was waiting in queue for more half an hour :/