IMarkerSymbol::YOffset not working properly for chart symbols

Description

The IMarkerSymbol::YOffset property does not work correctly with any of the chart symbols: PieChartSymbol, BarChartSymbol, StackedChartSymbol. This property always equals the XOffset value and cannot be set.

Cause

There is defective logic in the PieChartSymbol, BarChartSymbol, and StackedChartSymbol implementations of IMarkerSymbol.

Solution or Workaround