Members are not able to see the assigned projects under "Projects Assigned to Me" tab

Hi ,
Recently a project was created in world server application for translating some documents. Then the project was assigned to 2 other members to work but they are not able find the project assigned under "Projects Assigned to Me" tab.
They have granted access to access the project, but they are not able to see it.

Please help me with the solution for this.

Thank You.