If an e-mail or sys tray notification comes up over the window, the cursor can potentially click on it

[mcphedar]

Describe the bug The invisible cursor can interact with notifications that pop up over the game client, causing a loss of focus on the client.

Steps to reproduce Steps to reproduce the behavior:

1. play the MPS
2. observe that sometimes when a notification appears that the cursor can select it, removing focus from the client.

Expected behavior Notifications never interfere with game controls.