Hi Peter,
Sorry for the inconvenience caused.
we are unable to reproduce the issue from our side, so could you please check the below sample,
Sample:
<
http://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=GDCSelection-431514867.zip >
If you still face any difficulties, please modify the above sample based on your need and revert us with replication procedure.
Please let us know if you have any queries.
Thanks,
Rajasekar