The Router is actually using the changes applied to the fragment part of the URL and it is designed for the Mobile framework - the Grid widget could not take advantage of it.
When changing the fragment part of the URL the page is not reloaded at all.
I assume that you are trying to achieve what is covered in the project I attached. It uses the browser history API.
Please take a detail look at the Browser compatibility at the bottom of the page - as you can see not every browser could support such behavior.
Have a look at the attached project I hope it helps!
the Telerik team
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