I put your code in a sample mobile application, but did not manage to reproduce the described problem on iPad2 (iOS6). Could you please check my test page
and let me know what I am missing?
I also suggest you to check this demo
as it demonstrates how to include HTML form elements in KendoMobile Application.
the Telerik team
Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI