Hi Joel,
Thanks for your interest in Syncfusion Products.
I am afraid that I could not able to reproduce te issue in our sample.Could you please modify the sample with issue reproduced so that it will be very helpful for us to direct you to the exact solution?.
Sample:
http://websamples.syncfusion.com/samples/Grid.Windows/Development/GC_WF_Virtualgrid_F78032.zipPlease let me know if this helps.
Regards,
Nisha