Spline Component points cannot be edited inside Blueprint Viewport

Adding a spline component to a blueprint allows the points of the spline to be edited in the main level viewport however the points cannot be selected/edited in the blueprint viewport.

1. Open UE4 Editor (Any project)
2. Add blueprint based on Actor (ActorBP)
3. add spline component to blueprint
4. Compile/Save blueprint
5. Add instance of ActorBP to the level

Result:
End points of the spline can be selected in the level viewport but cannot be selected in the Blueprint viewport.

Expected:
Splines are editable in the level and in their blueprints.