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SciChartLegend Binding Issue

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I recently updated my SciChart license previously was using 6.3.0 but now using 8.3.0. Without changing any code other than the SetRuntimeLicenseKey I noticed a bunch of binding errors.

Warning 4 null Foreground TextBlock.Foreground Brush Cannot find source: RelativeSource FindAncestor, AncestorType=’SciChart.Charting.Visuals.RenderableSeries.LegendPlaceholder’, AncestorLevel=’1′.

Code below:

LegendData="{Binding LegendData, ElementName=mainLegend}"
        <WrapPanel ItemWidth="150" Orientation="Horizontal" />

Searching for same problem I noticed someone else had exactly the same issue with an earlier version. This was addressed at the time with an update. Wondered if the issue had creeped back in?

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