Gamepad "A" and directional-pad keys are not detected

Gamepad "A" and directional-pad keys are not detected when used within a sub widget.

Test project link:

[Link Removed]

1. Open attached test project
2. With a gamepad connected, press play
3. Press the "tab" key
4. Begin to press buttons on the controller. 

Result: Directional pad and A button are not printed 

Expected: Buttons to be printed