Widget interaction component appears to stop working after entering a physics volume

Widget interaction component appears to stop working after entering a physics volume. A Physics Volume appears to deactivate the Widget interaction component

1. Download the attached project
2. Open the project
3. Play in the Editor
4. Click on the button that says "Level02"
5. While on level 02 try and select one of the buttons
6. Notice that the Widget interaction component no longer appears to be working (can no longer highlight/click the buttons)

Expected: The physics volume would not affect the ability to use the widget interaction component
Result: The Physics Volume appears to deactivate the Widget interaction component

Widget Interaction Component - Bugs or Feature?