# Bug with participant join/leave events

**URL:** <https://devforum.zoom.us/t/bug-with-participant-join-leave-events/931>\
**Category:** API and Webhooks\
**Created:** [January 30, 2018, 8:15pm UTC](https://devforum.zoom.us/t/bug-with-participant-join-leave-events/931 "2018-01-30T20:15:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Daniel\_Rees](https://avatars.discourse-cdn.com/v4/letter/d/ed8c4c/32.png) [@Daniel\_Rees](https://devforum.zoom.us/u/Daniel_Rees)\
**Post date:** [January 30, 2018, 8:15pm UTC](https://devforum.zoom.us/t/bug-with-participant-join-leave-events/931/1 "2018-01-30T20:15:35Z")

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On beta 12 Mac os

When a participant joins or leaves the meeting the event is showing as “None” instead of&nbsp;ZRCUserChangedEventJoinedMeeting or ZRCUserChangedEventLeftMeeting.

When joining/leaving the meeting the event line:

\*r ListParticipantsResult 1 event: None

Can anyone confirm this bug?

Thanks!

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**Author:** ![TimZoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/timzoom/32/978_2.png) [@TimZoom](https://devforum.zoom.us/u/TimZoom)\
**Post date:** [January 18, 2019, 9:23pm UTC](https://devforum.zoom.us/t/bug-with-participant-join-leave-events/931/2 "2019-01-18T21:23:12Z")

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Closed on January 18, 2019, 9:23pm UTC