@Ethan Park It has been brought to our attention that you are working with a support engineer via a support ticket.
We are sharing the latest update with the community on here for others who might have a similar experience.
The service did send the event because it did not have any participants to send it to. This can happen because nobody has anyone join the call, the call is not long enough to get the roster update with the participants, or no participants send any data.
The product group also noticed some other oddities, which they have opened an internal investigation into.
If there are further questions or concerns on this matter, please reply back to this message so we can assist you further.