Side drawer content does not identify the click event

Hi,

I have implemented the RadSideDrawer with listview inside it. When I click the listview menu(which is inside side drawer), it does not identify that click event immediately. What you have to do is, keep tabbing on the view. When I check the same on Emulator on my system, the click event is recognised immediately but for my tab it needs to tab for multiple times. Sometimes first try works , sometimes 2-3 tries are needed and sometimes multiple tabs are just helpless.. Why is this issue??? What shall I check????