Can you please elaborate on the issue - what exactly appears while hovering with the mouse and what is the issue with the scrolling? Also as you said that only one of two controls have issues, I was wondering if you've applied a custom styling to the problematic control. Also in what browser have you tested your application.
If you can send us this information and a sample project, we will be able to further investigate the issues and its cause.
Thank you in advance for your cooperation.
the Telerik team
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