Questions

Hellow there,

I have this code for vertical lines of a graph binding to VM with INotifyPropertyChanged implemented.

<s:VerticalSlicseModifier.VerticalLines>
                                    <s:VerticalLineAnnotation  X1="{Binding IndexFirstBeep, UpdateSourceTrigger=PropertyChanged}"  >
                                    </s:VerticalLineAnnotation>
                                    <s:VerticalLineAnnotation  X1="{Binding IndexSecondBeep, UpdateSourceTrigger=PropertyChanged}"  >
                                    </s:VerticalLineAnnotation>
   </s:VerticalSliceModifier.VerticalLines>

At first I can see both vertical lines but after switching to another tab item and coming back, one (sometimes both) of the vertical lines disappears. If I double click the graph it reappears. This happens to almost all of my graphs. Here is how I set up my VM

private int indexFirstBeep = 6;
    public int IndexFirstBeep
    {
        get
        {
            return indexFirstBeep;
        }
        set
        {
            indexFirstBeep = value;
            OnPropertyChanged("IndexFirstBeep");
        }
    }

I have also noticed it happening to the renderables series of some of my graphs after switching their visibility.

Am on v4.0.30319

Please help.