D-pad does not trigger the On Key down function to fire off

D-pad does not trigger the On Key down function to fire off when using UMG

1. Open the editor
2. Make sure a controller is hooked up
3. Create a new widget blueprint
4. Add a button to the designer tab
5. Override the OnKeyDown function
6. Add a print string and leave the function unhandled
7. Save and compile
8. Open the level blueprint
9. Add the widget to the viewport on begin play
10. Play in Editor
11. Click the button
12. Press keys on the keyboard
13. Notice the print string fires
14. Press directions on the D-Pad of a controller
15. Notice that the print string no longer fires

Expected: Print string in the OnKeyDown Override would fire off when pressing a direction on the D-pad
Result: The print string does not fire for the D-Pad