jupp in IE9 they do Uvah - the tiling does not work in IE9 but it does in FF thats why i ask if this has been fixed if not i dont see a benefit of upgrading to the beta unless the ultramon update
The IE9 scrollbars not supporting tiling (and having other limitations too) is due to the very limited themes support that Microsoft put into IE9. They did not implement support for tiling which is why you cannot use tile in scrollbars in IE9. We filed bugs on this but Microsoft decided not to fix it.
This is why we added the special web scrollbars which allow you to create scrollbars that will be used in IE9 without having to cripple scrollbars in other applications.