From the information that you provided I can assume that the issue that you encounter is most probably related to some of the styles that you apply to your page. Can you please clarify if you have any custom styles that you use? If so, I would suggest that you try disabling them and check how it goes. In case this does not help I would kindly ask you to provide either a live url that I can inspect locally or open a support ticket where you can attach your runnable project so I can observe the issue from my side and help you out in the most efficient way.
the Telerik team
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