Dealing with a Product Owner or Scrum Master Playing Additional Roles on the Scrum Team

In this Scrum Tapas video, Professional Scrum Trainer Ravi Vajaria discusses some of his experiences when a Product Owner or Scrum Master either also plays another role on the Scrum Team or when Development Team members perceive that they do.  He talks about how it can change the dynamic of the team and ways to handle or avoid the situation.