Hello jaspreet,
To be able to help we need to have more information about your exact case. Do you experience the same problem in any of our RadWindow
demos? If so, please let us know which demo exactly is reproducing that problem.
If the problem appears only in your project, however, I suggest to open a support ticket and to send us a sample project where this issue could be reproduced. We will check it and do our best to help.
All the best,
Georgi Tunev
the Telerik team