Custom Events on an Actor Blutility with input parameters passes in garbage

Custom Events with parameters in an Actor Blutility pass in garbage instead of reading the default value set.

Tested in 4.21.2 (CL - 4753647), 4.22 (CL - 5660361), 4.23 (CL - 5755712)

1. Create new blank Blueprint project
2. In Editor Preferences > Experimental > Tools make sure Editor Utility Blueprints (Blutility) are enabled
3. Create a new Blutility based on Actor
4. In the Event Graph create a new Custom Event
5. In the details panel under Graph enable "Call in Editor"
6. Add a new Input parameter of type String and set the default value to "Test"
7. Add a print string node to the Event and set the InString of Print String to the String parameter of the event
8. Compile and Save the blueprint and add an instance to the level.
9. With the asset selected in the Details Panel > Blutilities select the event created and click Run.

Result: Garbage is printed instead of the default value.