Sorry for this misunderstanding. We reproduced the issue. Thank you for reporting this bug, it helps us in improving our products. I am glad to your telerik points for reporting this abnormal behavior of our RadWindow control. We will investigate the cause for this issue and we will fix it in one of our future releases. You can track this progress in our Public Issue Tracking System (PITS) with Issue ID = 4132.
the Telerik team
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