This feedback item is declined. The default behavior of the pie chart includes plotting the label on the outside of the pie slice. If the radius is 1, there is no other way than to position the label outside of the chart area, leaving the label to be clipped. The default layout system of the chart does not have a built-in mechanism to avoid label clipping. The labels should either be placed inside the chart (via the LabelDefinitions) or a SmartLabelsStrategy should be used.