If the user clicks X to close the game window, there is a chance that the client will freeze on the black screen. Note the issue may also occur when closing the window right after loading the client. Notice that crash dump will not get generated.
Steps to Reproduce:
1) Log in and Launch the game.
2) Close the Game.
3) Observe a black screen which remains.
Notes
None Known.
Workarounds
CTRL-ALT-DEL to close the game from Task Manager.