Hi Charlie,
Thank you for your interest in Syncfusion products.
We are able to reproduce the issue in version 5.2.0.25. This issue has been fixed in our latest version(6.1.0.34). I would like to recommend you to upgrade to this version.
http://www.syncfusion.com/downloads/latestversion/default.aspx Please refer to sample Screenshot given below which demonstrates the issue has been resolved in latest version:
http://websamples.syncfusion.com/samples/F72205_Snapshot.zip Let me know if you have any questions.
Regards,
Vinoth