Hello,
There is an issue when the $active is a custom window (@test for example) and trying to close the network window then the confirm window warning input placed into an random position side, the only situation that i reproduce so far is that this happening when i had the $active an custom window, i can't reproduce to see if this happens in other case, i took an short video to show you what is really happens.
Video:
http://goo.gl/6lLuBk- Thanks!