Text does not scale when using the "Draw Text" node in a HUD blueprint

When using the "Draw Text" node in a HUD blueprint the text will not respond to the change scale feature of the the node. It can even be set to zero and the scale does not change from the default.

1. Open a first person project in the Editor
2. Open the MyHUD blueprint
3. Add a Draw text node
4. Connect Event Receive HUD Draw the draw text to the Draw Text node
5. Set scale to 1
6. Type something into the text field
7. Compile and save
8. Run in the editor
9. Stop running the project
10. Go back into MyHUD
11. Change the scale to 99
12. Compile and Save
13. Run in the Editor again (notice there is no change)