Hi Dan,
We regret for the inconvenience caused.
We are unable to reproduce this issue. I have attached one simple sample, Could you please modify this sample which reproduces the issue that you mentioned here, so that it would help me in analyzing the issue?
http://websamples.syncfusion.com/samples/Chart.Windows/F62526/main.htmCould you please let me know what version of Essential Studio you are using?
Thanks for your patience.
Regards,
Rashidha.