Edits to TriggerBox ChildActor are only reflected in Viewport on first edit

Edits to TriggerBox 'Shape' parameters (in a ChildActor component) only update in Blueprint Viewport once, to view subsequent updates one must re-open Blueprint.

Confirmed in 4.22 MAIN - 4631879

1. Create a new BP inheriting from TriggerBox
2. Create a new empty BP (Actor parent) and add a ChildActor Component
3. Assign TriggerBoxBP to ChildActor Component
4. Select ChildActor Component - In details - expand Child Actor Component->Child Actor Template->TriggerBase->Collision Component->Shape->Box Extent and change one of the values

Result: The change in value will be reflected in viewport the first change. To view any subsequent changes you must reopen BP