Event API returns multiples of invitees

I’m just now starting to use the Get /v1/events/{id} API and I’m seeing the system return an array of 108 invitees, but we only have 27 that are actually invited. It looks like the list of invitees is quadrupled as the list has 4 copies of the same scout, but each has different “event_tracker_id”. I’m not exactly sure yet where that “id” gets used yet. But I’m not sure why there are 4 records here for the same scout. Is this a bug?