3D Widget Doesn't Render Custom Depth Stencil

Custom Stencils don't appear to work with 3d widgets.

1. Open a blank project
2. Enable "Custom Depth with Stencil" in project settings
3. Create a new actor BP and add a widget component
4. In the rendering settings for widget enable "Render Custom Depth Pass", set stencil value to 1
5. Set widget Class to "Main Menu Buttons"
6. Drag BP into scene and enable Custom Stencil Buffer visualization

RESULT
The 3d widget doesn't appear and viewport screen remains black.

EXPECTED
The 3d widget appears and it has a a yellow fill color with 001