I have inspected the issue deeper and it seems that I have misled you a bit in my previous reply - please excuse me for this. The issue is a known bug in RadGrid control that is logged in our feedback portal here
. You can follow it there and vote for it.
I have consulted with the developers team and unfortunately at the moment there is no a known workaround for it but I have increased its fixing priority and we will do our best to fix it as soon as possible.
Hope this will explain the issue.
Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.