To reproduce: Create a RadGridView and set its view to ColumnGroupsViewDefinition following this article - http://www.telerik.com/help/winforms/gridview-viewdefinitions-column-groups-view.html. The text in the headers long enough so it does not fit in the cells. Using the ViewCellFormatting event set each cell's TextWrap property to true. You will notice that the header cells are not being TextWrapped