OxyPlot Odd Marker Placement With LineSeries - marker

Question

I am coding a basic Cumulative Moving Average LineSeries with the MarkerType = MarkerType.Circle. For some reason my Marker is ending up not on the line. Pan and Zoom are disabled on my Y axis. I have included a picture of it. Anyone know of a reason why it would be doing this?
This is how I'm adding the Series to the plot
<Grid x:Name="GridChart" Column="2">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<TextBlock Grid.Row="0" Background="Yellow" Padding="4" FontWeight="Normal" FontSize="12" Visibility="Collapsed"/>
<oxy:Plot Grid.Row="1" x:Name="PlotStrikeTheoBasis" MouseDoubleClick="PlotStrikeTheoBasisOnMouseDoubleClick" Margin="5" LegendPlacement="Inside" MouseWheel="PlotStrikeTheoBasisOnMouseWheel">
<oxy:Plot.Annotations>
<oxy:LineAnnotation Type="Horizontal" Y="0"/>
</oxy:Plot.Annotations>
<oxy:Plot.Axes>
<oxy:LinearAxis Position="Left" x:Name="AxisQty" Title="Qty" IsZoomEnabled="False" IsPanEnabled="False" MinorTickSize="0"/>
<oxy:LinearAxis Position="Bottom" x:Name="AxixBasisPoints" Title="Basis Points" MinorTickSize="0" Maximum="{Binding Max, Mode=TwoWay}" Minimum="{Binding Min, Mode=TwoWay}" AbsoluteMaximum="200" AbsoluteMinimum="-200"/>
</oxy:Plot.Axes>
<oxy:LineSeries x:Name="LineSeriesMovingAverage" Visibility="{Binding MovingAverageQtyChecked, Converter={StaticResource BooleanVisibilityConverter}}" ItemsSource="{Binding MovingAverageDataSeriesSet}" DataFieldX="BasisPoints" DataFieldY="Quantity" Title="CMA" MarkerType="Cross" MarkerStroke="HotPink"/>
</oxy:Plot>
</Grid>
public partial class TheoBasisStrikeChartWindow : Window
{
private static readonly ILog Log = LogManager.Create();
private TheoBasisHistogramViewModel _viewModel;
internal TheoBasisHistogramViewModel TheoBasisHistogramViewModel
{
get { return _viewModel; }
set
{
_viewModel = value;
GridChart.DataContext = value;
}
}
public TheoBasisStrikeChartWindow()
{
InitializeComponent();
TheoBasisHistogramViewModel = new TheoBasisHistogramViewModel();
}
private void Refresh()
{
try
{
_viewModel.Refresh();
}
catch (Exception ex)
{
Log.Error(ex);
MessageWindow.Show(
"Error occurred loading Window. Please report to IT Staff",
"Error", MessageWindowImage.Error,
MessageWindowStartupLocation.CreateCenteredOn(this, this), MessageWindowButton.OK);
}
}
}
public class BasisPointsQty
{
public double BasisPoints { get; set; }
public double Quantity { get; set; }
public BasisPointsQty(double basisPoints, int quantity)
{
BasisPoints = basisPoints;
Quantity = quantity;
}
}
public class TheoBasisHistogramViewModel : PropertyChangedNotifier
{
public ObservableCollectionEx<BasisPointsQty> MovingAverageDataSeriesSet { get;}
public TheoBasisHistogramViewModel()
{
MovingAverageDataSeriesSet = new ObservableCollectionEx<BasisPointsQty>();
}
public void Refresh()
{
// Update MovingAverageDataSeriesSet here
}
}