PhysicsConstraintComponent not editable on instances.

When adding a PhysicsConstraintComponent to a class, it can be properly edited in the Blueprint editor. However, if trying to manipulate it via the instance editor, it is "locked down"

1. Create a new Blueprint Only project.
2. Create a new Actor Blueprint.
3. Add a PhysicsConstraintComponent to the actor.
4. In the Blueprint editor, verify you can access / modify properties such as angular / linear limits.
5. Drop an instance of this Actor into the level.
6. Select the Actor instance.
7. Select the PhysicsConstraintComponent from the Actor.
8. Attempt to modify the same properties previously tested.

Expectation: Property editing acts identically in the instance and Blueprint versions.

Actual: Property editing is "locked down" in the instance editor but works in the Blueprint editor.