Nav bar Shrinks after returning from Full Screen video on iOs 8.3

Hi. can any body have solution of the problem

1-> i have created a navigationWindow where the list of video is displayed

nav = Titanium.UI.iOS.createNavigationWindow({ window:$.filmlist,

          barImage :'/images/TBar.png',


    });

nav.open();

2-> when user click on any video a new window is open through the nag.opneWindow() method

var win = Alloy.createController('watchFilm', { "Filmurl" : url, }).getView();

nav.openWindow(win, {
    animated : true
});

--

the problem is when user switch to full screen video and then coming back the Nav bar image got shrink a leaving a blank space between the content and the Bar Image

here i the sequence of image

before opening

https://drive.google.com/file/d/0B8JPQvQmhItBUkNNOGdlcVpvX2dDa3BRUnpwQ3ByZGFhNUc4/view?usp=sharing

Normal https://drive.google.com/file/d/0B8JPQvQmhItBeHg5bjZEcUkzLTAwbnBtRnNWSjBLcmZQYW1N/view?usp=sharing

Full Screen https://drive.google.com/file/d/0B8JPQvQmhItBY3RfUV9FcmJSNTN1RGlLZDdZa25HZ05YSlZz/view?usp=sharing

After Full Screen https://drive.google.com/file/d/0B8JPQvQmhItBMEllM1RoMEpreEp5WFo4LVRBMUhheXctdUZR/view?usp=sharing

i am using Titanium SDK version 3.5.0.GA

thanks