SurfaceMeshRenderableSeries3D DrawMeshAs=WireFrame Stroke=black - no mesh drawn

With these settings

            <s3D:SciChart3DSurface.RenderableSeries>
            <s3D:SurfaceMeshRenderableSeries3D x:Name="surfaceMeshRenderableSeries" 
                                               DrawMeshAs="Wireframe" 
                                               ContourStrokeThickness="2" 
                                               ContourInterval="10" 
                                               ContourOffset="0" 
                                               Stroke="black"  Maximum="150" StrokeThickness="1.0" DrawSkirt="True" 
                                               Opacity="0.9" 
                                               MeshColorPalette="{StaticResource HeightColorMap}"/>
        </s3D:SciChart3DSurface.RenderableSeries>

No mesh is visible

Change Stoke to #FF000001 and the mesh appears.
Or
Change DrawMeshAs to SolidWireFrame and the mesh appears

Just with DrawMeshAs=Wireframe and Stroke=black or Stroke=#FF000000 no mesh is drawn.

This is a problem as we allow the user to select the colour for the Stroke through a color picker UI and they can (and likely will) select black!

(Can workaround by changing black to #FF000001 – but would be nice if didn’t have to)