Actor Component gets displayed above Scene Component when making a new root

Making a scene component the new root component results in the actor component being displayed above the scene component hierarchy

1. Open QAGame in editor.
2. Create and open an actor blueprint.
3. In the Components tab, add a Blackboard component.
4. Add a Cube static mesh component.
5. Drag the Cube on top of the Default Scene Root to make it the new Root Component.

RESULT

The Blackboard component suddenly becomes listed above the Cube component.