Minor bug

[Future]

If I minimize the game for 15minutes, and open it again.. The ''Server closed the connection'' came up.
But, If I was ingame for 15minutes without minimizing it, the ordinary kick / idling came up like It should..
What's causing that? Someone noticed it?

In my case, the two Server closed the connection without any other explanation occured when I had the game on-screen.
Today I was kicked while I had game minimized and I saw the reason, seems that NOW works good at me.