Service Desk v9.3 Duplicate Requests being created

Service Desk v9.3 Duplicate Requests being created

We have very recently been having an issue that when one of the Technicians are copied on an email that becomes a request in the system, a duplicate request is created. The same doesn't happen when a user is copied on the email. I have removed all of the notifications and business rules but it is still happening. Has anyone else had this problem?

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