Hello,

This has happened a few times over the past year, and appears to be happening more frequently - my calendar invitees are getting event cancellation notifications in their email the day of an event even though I see the event on my local calendars (MacOS, iPhone) with the invitees in them. The local calendars sometime update to then remove the invitees from the calendar.

I'm attaching one of the cancellation emails that went out. Another happened early last week, and another in the week before that… 

Thanks for taking a look into this!