Widget Component Does Not Cast Shadows From Certain Lights

The widget component acts differently under different lighting types. For example it will cast a shadow if being lit by a directional light but won't otherwise.

It also seems point lights affect the widget component in a strange way. You can see the light on the other side of the widget component even though it is supposed to be opaque.

1. Open attached project
2. PIE

RESULT
The Widget Component Casts a shadow when being lit by a directional light but not by any other light types. A spotlight was used as an example

EXPECTED
The widget Component behaves the same with different light types