When creating a chart a few items are not working properly. I am experiencing these when saving as a PPT2007.
-Chart Series - Fill Color has no effect. Always defaults to default blue color
-Chart Series - setShowPercentage function has no effect. It always shows count regardless of setting
-Chart Title - Chart title is always visible. calling "$shape->getTitle()->setVisible( false )" has no effect.
-Chart Title also defaults to Series name in single series bar chart.