Set members in Slate Color for the foreground color of a combo box does not appear to change the color of the selected text

When setting the foreground color through blueprints at run time for a combo box it does not appear to affect the the selected item text.

1. Download the attached project
2. Open project
3. Play in editor
4. Click the combo box
5. Make a selection from the drop down

Result: The text is black even though Set members in Slate color was called for the foreground color of the combo box (in the example it was set to Red)
Expected: The text would have shown as red (This was the color that was chosen in the Set members in Slate Color node)