We have been unable to reproduce this issue on our side, could you please provide some more details on your specific scenario. You mentioned you have been able to reproduce it in the sample application, could you tell us which example you have used and what the code looks like.
We have tested this scenario using the SDK samples application from the installation from here :
The specific example we have used is Chart -> UnboundMode and this is the code :
<charting:CategoricalDataPoint Category="Apples" Value="7"/>
<charting:CategoricalDataPoint Category="Oranges" Value="13" />
<charting:CategoricalDataPoint Category="Pears" Value="9"/>
Using this we're able to see the labels of the data points. In case the issue persists on your side, it would be very helpful if you could help us reproduce your specific scenario.
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