System.Windows.Data Warning: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='Telerik.Windows.Controls.Charting.ChartLegend', AncestorLevel='1''. BindingExpression:Path=LegendItemMarkerShape; DataItem=null; targ
When KeepExtremes sampling function is used, EmptyPointBehavior.Gap and EmptyPointBehavior.Drop settings are ignored and points appear as if EmptyPointBehavior.Zero is used.
Labels for 0-value data points do not get alternative positions.