'Called when another actor steps overlapping this actor' sounds like it should say 'Called when another actor STOPS overlapping this actor'
1. Right click in the viewport
2. Highlight 'Add Event' at the bottom
3. Highlight 'OnActorEndOverlap'
Result: The description of 'OnActorEndOverlap' is misspelled
Head over to the existing Questions & Answers thread and let us know what's up.