Users receive emailed notifications for calendars they don't watch

One of our calendars, which isn't embedded in any page, has been sending email notifications to users who are not watching the calendar. Not all users are affected. There appears to be no way to unsubscribe them from receiving these notifications.

• The users' lists of watched items doesn't contain this calendar
• When the users access the Calendars page and select this calendar's drop down menu from the elipsis, they find that they are not watching this calendar (status reads "Watch" and not "Stop Watching" or "Watched")

I used this query to see if the calendar is embedded anywhere returned no results:

embeddedSubCalendarId:CALENDARID

This seems to be a known issue, as reported here: https://jira.atlassian.com/browse/TEAMCAL-3709

Is there any fix for this?

Workaround:

If you navigate to the calendar by following the link provided in the email notification, it has "Watch" instead of "Stop Watching" as the option. You can see the "Stop watching" option by following the specific instructions below to navigate to the calendar.

1. Click "Calendars" in the top Confluence navigation bar.
2. Locate the target calendar and click the ellipses button ()
3. Click Stop Watching.