XAML TextBlock Performance gotcha

I’ve been using this.DebugSettings.IsTextPerformanceVisualizationEnabled = true to check on the text performance of my app and noticed this little gotcha. Consider the following code;

    <StackPanel>
        <TextBlock Text="Using text property" />
        <TextBlock>Using text content</TextBlock>
    </StackPanel> 

When you run the app you’ll see the ‘Using text property’ is a pleasing shade of bright green but ‘Using text content’ is not using the optimised text rendering. Cheeky little gotcha. More info (including this) TextBlock

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