I have a XamWebChart  that has  5 data series. Everything works except the Tooltip only shows up on the Data1 series.  However, If I take out the tooltip from the Data1 series then tool tip for Data2 series shows up . If I take out tooltip from Data2 series then Data3 tooltip would show up , and so on and so forth.

Its seems to be an XamWebChart bug. Has anyone seen this behavior??

<igCA:XamWebChart Visibility="{Binding ElementName=TglSecondary, Path=IsChecked, Mode=OneWay, Converter={StaticResource visGridGraphConverter}}" >

                <igCA:XamWebChart.Series>

                    <igCA:Series Label="Total" ChartType="Line" DataSource="{Binding GridCollection}" DataMapping="Label=Total;Value=SystemTotal;ToolTip=TOOLTIP">

                        <igCA:Series.Marker>

                            <igCA:Marker MarkerSize="7" Foreground="Transparent"/>

                        </igCA:Series.Marker>

                    </igCA:Series>

                    <igCA:Series Label="Data4" ChartType="StackedColumn" DataSource="{Binding GridCollection}" DataMapping="Label=Total; Value=Data4;ToolTip=TOOLTIP">

                    </igCA:Series>

                    <igCA:Series Label="Data3" ChartType="StackedColumn" DataSource="{Binding GridCollection}" DataMapping="Label=Total; Value=Data3;ToolTip=TOOLTIP">

                    </igCA:Series>

                    <igCA:Series Label="Data2" ChartType="StackedColumn" DataSource="{Binding GridCollection}" DataMapping="Label=Total; Value=Data2;ToolTip=TOOLTIP">

                    </igCA:Series>

                    <igCA:Series Label="Data1" ChartType="StackedColumn" DataSource="{Binding GridCollection}" DataMapping="Label=Total; Value=Data1;ToolTip=TOOLTIP">

                    </igCA:Series>

                </igCA:XamWebChart.Series>

            </igCA:XamWebChart>