OAuth app.
The app is subscribed for webinar.registration_created and webinar.ended notifications. 3 registrants were added to webinar, then webinar started\ended. But only 2 webinar.registration_created events received - for the first 2 registrants, no event for the 3rd one. And later on webinar.ended event came. It looks like the registration event for 3rd user just got skipped.
Could this caused by Degraded Webhook Performance or has a different reason?
Let me know if additional info is required for investigation.