Hi Robert,
We regret for the delayed response. I have tested for this issue and was unable to reproduce this issue. Exception is not thrown even after zooming for 30 times.
I have attached the sample used for testing and the video for reference in the following link.
http://websamples.syncfusion.com/samples/Chart.Windows/F76124/main.htmCould you please let me know if I am missing something? Is it possible to provide us with the stack trace of this error or the sample that could reproduce this error. So that it will be more helpful to analyze and provide yuo with a bettter solution at the earliest.
Kindly let us know if you have any other queries. Thanks for your patience.
Regards,
Manohari.R