One of our journals on OJS 3.0.2 just published a new issue, and some users got the notification email twice.
Some of the editors have a main account with many roles, and test accounts with only one role, connected to a different email address. As far as I can tell only the multirole accounts got two emails. My own admin account that only has the roles Journal Editor and Journal Manager only got one email.
I couldn’t find anything in the email-log in the database, I assume because these are automatic emails, is there any other data stored about this?