Hi Mike,
Sorry for the delay in response.
I have created a sample to test this issue in our latest version 6.1.0.34. I was not able to reproduce the issue in the following sample:
http://websamples.syncfusion.com/samples/Tools.Windows/F71081/main.htmPlease have a look at the above sample and if still the issue exists, could you please elaborate the reproduce steps so that we could sort out the cause of the issue and provide you a solution?
Regards,
Jeba.