Exposed variable does not appear to update when the default is changed for the spawn actor from class node

When updating an exposed variable for an actor being used with spawn actors from class, the exposed variable setting will not update to reflect the changes to the default setting.

1. Download attached project
2. Open project
3. Open the actor blueprint "SpawnedActor"
4. Set the default value of "TestVar" to anything other than None
5. Compile and save
6. Open the actor blueprint "Blueprint"
7. File > Refresh all nodes

Result: The Spawn actors from class node does not update the default value for the exposed variable
Expected: The Default value for the exposed variable on the spawn actor from class node would be updated to reflect the changes to the default value of the spawned actor