Hi Mohammed Shafeel,
Greetings from Syncfusion support.
We have not included any fixes for the ASP.NET WebForms Classic in the last few years. However, we would like to let you know that this suite of ASP.NET controls which was offered as “Essential Studio for ASP.NET ” till the Volumes 1 2019 release has been marked as “Classic” and the newer set of controls powered by Essential JavaScript 1 and Essential JavaScript 2(ASP.NET with ES5) takes its place. The newer version provides several advantages over the classic edition including being purely client side rendered HTML5/JavaScript controls ,offers better performance and provides better support for touch interactivity.
The newer version includes all the features that the classic version had so it should be easy to migrate if requires. The general guideline is that if you are using the classic edition of controls in existing products then you can continue to use them. However if you are starting a new project then it is recommended that you use the newer alternative available. We will also be happy to provide any required assistance in migrating from the classic edition.
For your convenience we have attached the documentation and demo sample so please refer the documentation and demo sample for your reference.
Documentation links:
Demo link:
Please let us know, if you need further assistance.
Regards,
Balaji Sekar