Hi Paulo,
Thank you for your interest in Syncfusion products.
The reported issue is suspected to be defect. Could please create an DT incident for your query so that we can work more on the issue reported and provide you patch for it.
You can create the DT incident from the following link.
http://www.syncfusion.com/account/dashboardIn the interests of maintaining confidentiality, we have a policy of not sharing patches or otherwise proprietary customer specific information in the public Forum.
Let me know if you have any concerns.
Regards,
Bharath M