In GroupBar control , when we bound the GroupViewItem as content of GroupBar, the SelectedObject property get called four times on selecting the GroupView Items.
Replication procedure to reproduce the issue.
1.Open the attached application
2.Place the Breakpoint in setter property of SelectedGroupViewItem in MainViewModel class.
3.Start the application
4.Select the Item in first GroupBarItem
5.Observe the setter property called four times .
Expected result : The setter property should not called for four times.