Naming a custom event string input DisplayName will cause the BP Node spawner to use blank or user-entered data for node listing+creation.
This also occurs when renaming the Text input of a function to "DisplayName". The function will also appear without a name when placed in a blueprint graph (see attached image for example).
1. Create a Custom Event inside of a Blueprint
2. Add a String input to Custom event, name the input DisplayName
3. Call the custom event (either inside of same BP or in another BP)
4. Observe that the function is listed as BlueprintFunctionNodeSpawner_#### and when in event graph the BP Node name is blank. (Or will read the Default Value set in custom event)
Head over to the existingAnswerHub thread and let us know what's up.