Hi Vaibhav,
Thanks for your interest in Syncfusion products,
The reported behavior is known, and has been fixed in the version 8.4.0.10.
Could you please raise an incident in Direct-Trac support under the following link, if you wish to receive a patch for the version 8.3.0.21.
http://www.syncfusion.com/support/directtracPlease let us know your concerns.
Regards
Vallarasu S.