When the RadDataGrid is placed inside a Grid's RowDefinition with Auto Height, the row for the last item from the ItemsSource is not rendered. 

DataGrid is populated with Arsenal, Man United, Liverpool and distinct filter 'Liverpool' is applied via UI.
Adding new Liverpool instances does not change the UI but it should - multiple Liverpool instances should be present in the rows.

The following exception is thrown when expanding row details with a height larger than the row height:

ArgumentOutOfRangeException: "Non-negative number required."

Keyboard navigation cannot be performed unless IsSynchronizedWithCurrentItem is True.

The DataGrid ScrollBar is covered by the group header when grouping.

looking the attachment.