@Lar if a pro updates the project status it will not notify other pros of another pro being hired unless the customer chooses to leave a review. When a pro updates the status of a project to "In Progress" or "Done" they will be given the option to send the customer a review request.
If that's the case, that is not working for me. 2 people that I've been speaking to recently I see have reviewed another pro and I was not notified at all about it and was continuing to contact them (without me being in the loop). I'll PM you the 2 names if you want to check it out.