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3
Votes

SfChart thrown NullReferenceException when navigating away with Tooltip active

The following exception seems to appear frequently when navigating away from a chart when the tooltip is still active.  It seems to happen at least 1 out of 10 times.

System.NullReferenceException

  HResult=0x80004003

  Message=Object reference not set to an instance of an object.

  Source=Syncfusion.Blazor

  StackTrace:

   at Syncfusion.Blazor.Charts.Chart.Internal.ChartTooltip.RemoveHighlightedMarker(List`1 pData)


To reproduce using attached "counter" page from template, move your mouse around quickly over the chart.  The tooltip should pop up and begin lagging behind mouse.  Quickly click on the "Home" page before the chart tooltip has time to close.  If you do this several times it should give you the error.