Vendor Project Visibility - allow project overview

One of our vendors complained about the fact that if one of the users of the vendor project managers group has accepted, the other PMs are not able to view the project in their Active tab.

This means that Vendor PJM 1 does not see if Vendor PJM 2 already claimed a task that the vendor expects or if the task is not there to retrieve yet.

Please enhance this functionality to allow the vendors to see all their projects, regardless which PJM accepted the task.