Same issue here, one a desktop and other a laptop. If I get as far into the game as character select it will hang with a blank screen when trying to back out. I play windowed so just go up and click the X in the corner to close the window and window closes. Did it when I played full screen also but was a pain to get game closed so now I play windowed. Does this every time I exit from character select. If I only get to server select can back out no problem. It will log out from game fine to character select but if trying to back out to the server select menu it hangs.