I am running Jira Server 8.13.7 and have run into a roadblock trying to determine how a watcher is being added to an issue. I've checked both the Automations and Project Automations tabs, as well as the project's Workflow. I haven't been able to determine where a user is being added to the issue's Watchers. Then assignment of the watcher only happens when the issue transitions from Unassigned to being assigned to a user. Then the Watcher is assigned as well as mentioned in a comment on the ticket. Any suggestions what mechanism might be causing this action?