Coordinate display chart (polar)

Good afternoon, the question is. There is a Chart of the usual type and when the cursor is hovering over a point, a plate with coordinates is displayed. I create a polar type Chart and this dashboard doesn’t work there. What could be the problem? (I attach the code for both chart). This is the code for the line chart.

<c1:C1Chart x:Name="chart_bi_ch_dec" ChartType="LineSmoothed" Palette="Verve" Margin="0"> <c1:C1Chart.View> <c1:ChartView> <c1:ChartView.Layers> <c1:ChartPanel MouseDown="ChartPanel_MouseDown_3" MouseWheel="ChartPanel_MouseWheel_3" > <c1:ChartPanelObject x:Name="XYmarker6" DataPoint="0,0" Action="MouseMove" HorizontalAlignment="Left" VerticalAlignment="Bottom" Attach="DataXY"> <Border Background="#7F008000" BorderBrush="Green" BorderThickness="1,1,3,3" Margin="-1.5,0,0,0" CornerRadius = "6,6,6,0" Padding="3"> <StackPanel> <TextBlock Text="{Binding Parent.Parent.Parent.DataPoint.X, RelativeSource={RelativeSource Self}, StringFormat=x\=0.00;x\=-0.00}" /> <TextBlock Text="{Binding Parent.Parent.Parent.DataPoint.Y, RelativeSource={RelativeSource Self}, StringFormat=y\=0.00;y\=-0.00}" /> </StackPanel> </Border> </c1:ChartPanelObject> </c1:ChartPanel> </c1:ChartView.Layers> <c1:ChartView.AxisY> <c1:Axis Title="Эффективная площадь рассеивания, дБм^2"/> </c1:ChartView.AxisY> <c1:ChartView.AxisX> <c1:Axis Name="Title_x_dec_ch_bi" Title="Угол места / Азимут, град." MinorTickThickness="0" FontSize="10" MajorTickThickness="2"/> </c1:ChartView.AxisX> </c1:ChartView> </c1:C1Chart.View> <c1:C1Chart.Data> <c1:ChartData> <c1:XYDataSeries Values="" XValues="" ConnectionFill="#FFF30707" SymbolFill="#FFB8250E"/> </c1:ChartData> </c1:C1Chart.Data> </c1:C1Chart> 

But the code for the polar graphics

  <c1:C1Chart x:Name="chart_bi_ch_polyar" ChartType="PolarLines" c1:PolarRadarOptions.StartingAngle="0" c1:PolarRadarOptions.Direction="Counterclockwise" > <c1:C1Chart.View> <c1:ChartView> <c1:ChartView.Layers> <c1:ChartPanel MouseDown="ChartPanel_MouseDown_4" MouseWheel="ChartPanel_MouseWheel_4" > <c1:ChartPanelObject x:Name="XYmarker1" DataPoint="0,0" Action="MouseMove" HorizontalAlignment="Left" VerticalAlignment="Bottom" Attach="DataXY"> <Border Background="#7F008000" BorderBrush="Green" BorderThickness="1,1,3,3" Margin="-1.5,0,0,0" CornerRadius = "6,6,6,0" Padding="3"> <StackPanel> <TextBlock Text="{Binding Parent.Parent.Parent.DataPoint.X, RelativeSource={RelativeSource Self}, StringFormat=x\=0.00;x\=-0.00}" /> <TextBlock Text="{Binding Parent.Parent.Parent.DataPoint.Y, RelativeSource={RelativeSource Self}, StringFormat=y\=0.00;y\=-0.00}" /> </StackPanel> </Border> </c1:ChartPanelObject> </c1:ChartPanel> </c1:ChartView.Layers> <c1:ChartView.AxisY> <c1:Axis Title=""/> </c1:ChartView.AxisY> <c1:ChartView.AxisX> <c1:Axis Title="" AxisType="Y" MajorUnit="30" MinorUnit="5" MinorGridStroke="{DynamicResource {x:Static SystemColors.ControlLightBrushKey}}" MajorGridStroke="{DynamicResource {x:Static SystemColors.ControlLightBrushKey}}" AnnoFormat="#°"> <c1:Axis.AxisLine> <Line/> </c1:Axis.AxisLine> </c1:Axis> </c1:ChartView.AxisX> </c1:ChartView> </c1:C1Chart.View> <c1:C1Chart.Data> <c1:ChartData> <c1:XYDataSeries Values="" XValues="" ConnectionFill="#FFF30707" SymbolFill="#FFB8250E"> <c1:XYDataSeries.Effect> <DropShadowEffect/> </c1:XYDataSeries.Effect> </c1:XYDataSeries> </c1:ChartData> </c1:C1Chart.Data> <c1:C1ChartLegend Title="Эффективная площадь рассеивания, дБм^2" HorizontalAlignment="Center" Margin="0,10,6,-16" Position="TopRight" RenderTransformOrigin="0,0" Height="42"/> </c1:C1Chart>