Hello,
We encountered another issue with RadPropertyGridView when binding Item to control's SelectedItems property. It is not possible to edit the value of such enum's property. When binding to SelectedItem - everything works fine.
Maybe it is connected with a issue reported as ticket: 935801 (http://www.telerik.com/account/support-tickets/view-ticket.aspx?threadid=935801)
Best regards
Marcin Danek