Hello Rich,
As I mentioned in one of my previous posts this issue is a limitation in the RadAjax CSS parser mechanism which could not be fixed for now as its fixing could cause some breaking changes in the RadAjax functionality.
Currently the provided workaround is the only possible way for avoiding the problematic beahvior you are facing.
Excuse us for any inconvenience this limitation may lead.
Kind regards,
Maria Ilieva
the Telerik team
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