Every time I publish a project, it sends an email notification to task owners saying their task has changed, but it actually has not

The email notification setting is checked by default to notify a task owner if a task has been assigned or modified.  However, every time I publish the project it will send an email notification to all users who have tasks assigned to them stating that something has changed.  It will send this email no matter if something has really changed or not.  It's a problem because I might publish several times a day, but the task owners think that something has really been adjusted/modified with their task.  The email is confusing and unnecessary.  How can I resolve this?