Gray box at the bottom of screen shots on MAC if the window is larger than the screen

If the User uses the F9 key to take a screen shot of their project and the window for the project is larger than the screen, the part of the screen that is not shown will be grayed out (this is not the case on PC).

1. Download attached project
2. Open attached project on a MAC
3. Open project settings
4. Set the New Editor window's height to 3,000
5. Play in a new Editor Window
6. Press F9 to take a screen shot
7. Go to the screen shots folder for the project
   Saved > ScreenShots > Picture
8. Notice the gray bar at the bottom