ValidationErrorHandler does not get invoked when validating in view mode and System.ComponentModel.INotifyDataErrorInfo interface is implemented.

RadGridView's FooterRow is still part of the visual tree, even though its Visibility is set Collapsed. 

1. Define a custom AggregateFunction for a column
2. Group on a column
3. A calculation on the AggregateFunction is invoked
3. The Grouping.Key (of the input parameter) corresponds to the correct key
4. Edit a value on the column (having the AggregateFunction)
5. A calculation is invoked, but the Grouping.Key is "1" and not the correct key.

Columns with * width are not measured correctly when GridView is placed in ScrollViewer and its width is changed.

PropertyChanged event is called for a cell with nullable value when is in edit mode and click on another cell

When you place a DataTrigger whithin a CellTemplate, it is being ignored by RadGridView for WPF

Workaround ( until fixed ) - set the ContentTemplate of the cell via Style in a static resource instead.