Workaround is to specify that the format string should contain only the required member path:

<telerik:GridViewDynamicHyperlinkColumn Header="ID" DataMemberBinding="{Binding ID}" NavigateUrlMemberPaths="WebUrl" NavigateUrlFormatString="{} {0}"  TargetName="_blank"/>

A kind of a workaround for the user: resize any column/the entire window or collapse the row details.

The designer crashes with this exception:
InvalidOperationException: 'GridViewColumnGroupRow' TargetType does not match type of element 'GridViewColumnGroupRow'.

See the attached screenshot. It's from a new project, after clean and rebuild.

Visual studio: 2015
Telerik UI for wpf: 2015.2
Implicit styles, Windows8 theme.

* The problem is not theme specific. As a workaround, use no xaml binaries instead of xaml files.

GridViewHeaderCell are not draggable when RadGridView is hosted in DropDownButton.DropDownContent. Trying to drag a cell does not trigger drag events.

The problem should be resolved with lib version 2015.3.1012.

I would like to be bale to modify at once several cells of a GridViewComboBoxColumn, when using the common ItemsSourceBinding for all rows (in my GridView, the selection ​is: SelectionMode="Multiple" SelectionUnit="FullRow").
So I would like for the selected rows to apply the same value as the edited cell.

The issue is reproduced only with GroupRenderMode="Flat".

GridViewDataColumn doesn't respect FallbackValue when the source property returns DependencyProperty.UnsetValue

The problem should be resolved with lib version 2015.3.1130.

With R2 2016 GridViewComboBoxColumn will expose a property IsLightweightModeEnabled. Setting the property to True should resolve the problem.

The problem should be resolved with lib version 2016.1.125.

If I change Column.IsVisibility to FALSE, the column group headers are disappear and not restored.

The problem should be resolved with LIB version 2016.1.404.