I have inspected the provided images and it seems that the one from the deployed application is a bit bigger that the one from your local application. Here
is an image demonstrating the above observations. Could you check if you had zoomed the browser, when observing the deployed application. In addition, could you specify the browser under which you observe the problematic behavior?
Lastly, I noticed that the RadComboBox is placed in a RadWindow. For that matter, could you clarify if the problem occurs when you scroll the page?
the Telerik team
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