the problem looks like as a browser behavior, because the <
symbol is used by the browsers as a start of a tag. Our test showed that this symbol was rendered only by Firefox. We logged the problem for detailed researc,h but we could not guarantee that it is possible to add this symbol in the insert symbol
You could create a custom dialog
if necessary. You can follow the PITS Issue by its ID: 1781
In TFS the Item's ID is: 62245
the Telerik team
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