Commented Issue: Listpicker not setting index above 38 [10994]

I am using listpicker control silverlight toolkit and there are more than 100 item in my collection that is binded with this control. But when I want to set the index of listpicker that is above 38. It will not set that index but below 38 it will set that index.
Comments: ** Comment from web user: Arslan007 **

Please see my attached sample project