Setting an interface variable on spawn for widgets does not appear to be working

If the user has an interface variable that is exposed on spawn in their widget they will not be able to set this variable via the exposed pin for the create widget node.

1. Open the editor
2. Create a new interface
3. Create a new widget blueprint
4. Open the widget blueprint
5. Create a new variable
6. Set the variable type to the interface that was just created
7. Set the variable to be exposed on spawn and editable
8. Open the level blueprint
9. Create the blueprint in the attached image

Populate exposed interface on spawn is not working (compile error in blueprint)