The menu and cursor are removed from the Client window when clicking Play in the Server menu in Multiplayer Shootout

The menu and cursor are removed from the Client window when clicking Play in the Server menu in Multiplayer Shootout.

Reproduced using the 4.8.1 download of Multiplayer Shootout. Did not occur in 4.7.6.

1. Open the 4.8.1 version of Multiplayer Shootout
2. PIE in New Editor Windows
3. Click Play in the Server window

Result:
The Server begins play, but the menu and cursor are removed from the Client window.