The World Outliner will only show one Child Actor on a Blueprint that has multiple Child Actors in its Components tab

The World Outliner will only show one Child Actor on a Blueprint that has multiple Child Actors in its Components tab. Note that all Child Actor Components added via the Construction Script will display as intended in the World Outliner.

Reproduced in Main (//depot/UE4/Promotable-CL-2507843)

1. Open any project
2. Create a new Actor Blueprint
3. Create a second Actor Blueprint
4. In the first BP, add a Child Actor in the Components tab
5. Assign the second Actor BP to the Child Actor
6. Drop the first BP in the level
7. Note that the Actor BP correctly displays a Child Actor in the World Outliner
8. Add a second Child Actor component in the Components tab
9. Compile

Result:
The World Outliner does not show the second Child Actor component.