iPad-Popover: when popover view open in ipad it call window blur event in SDK 3.5.0

i user Titanium.UI.iPad.Popover in my ipad app it works fine in old sdk 3.4.0 but when i use sdk 3.5.0 it changing the behaviour of app. in 3.4.0 when Popover view is open it did not call any window blur even and when close it did not call focus event but in sdk 3.5.0 and 3.5.1 when Popover view is call it call blur event of window and when close, it call focus event of window . so how can i stope calling that event on Popover view open and close.