Changing a Grid widget's layer setting a runtime does not update

When changing the layer settings for a widget with in a Grid panel at runtime there appears to be no change. The widgets do not update visibly, however when getting the layer setting it will reflect that the layer was changed (it's just that the changes do not update visibly).

1. Download the attached project
2. Open the project
3. Player in the editor

Result: The two images in the Grid panel widget do not swap places (to reflect their layers being changes)
Expected: The widget would appear to swap between white and blue as the images trade layer settings (setting one in front of the other)