Thanks really strange (having that bullet under FF only). Could you please provide a live URL where the problem could be observed? Alternatively, you can open a support ticket and send us a simple running project (incl. CSS, images, skins, DB backup if needed and so on) demonstrating the problem (and step-by-step instructions on doing so). In that way we can reproduce and pinpoint the problems you're facing on our side, understand the logic of your application and provide a solution.
the Telerik team