Task Groups Assigned label not being displayed
 

In the View Options dialog the right hand label of the Task Groups is set to 'Assigned' and yet the Gantt chart does not display a summary of the assigned, irrespective of whether the group is expanded or not. This was the default setting so I imagined this would be supported. I would at least expect the assigned to be displayed on a collapsed group. Is there something I've missed?

thx