Hi Boris,
Thanks for your interest in Syncfusion Products.
We are able to reproduce the issue from our side. We cannot provide patch for this issue through forum. Hence, we request you to create an incident where we can provide you with patch for the issue.
So, kindly open an incident in Direct Trac, where you obtain a better support.
Please let me know if you have any concerns.
Regards,
Athiram S