Hi Faisel,
Thank you for using syncfusion products.
The issue not occurs in our current essential studio version 12.1.0.43, we will suggest you to update your Essential studio version.
Please find the link to update the essential studio version.
http://www.syncfusion.com/support/forums/announcements/116142
Please let us know if you need further assistance.
With Regards,
Praveen