[TIMOB-16560] iOS: Window focus/blur events do not fire after animating the navigation window

 
   
   var height = Ti.Platform.displayCaps.platformHeight;
       	var width = Ti.Platform.displayCaps.platformWidth;
       	var isToggled = false;
     			
   		var win = Ti.UI.createWindow({
   			width : width,
   			height : height,
   			backgroundColor : "pink"
   		});
   
   		var nextWin = Ti.UI.createWindow({
   			width : width,
   			height : height,
   			backgroundColor : "blue"
   		});
   
   		var buttonNext = Ti.UI.createButton({
   			title : "next window"
   		});
   		
   		var buttonMenu = Ti.UI.createButton({
   			title : "MENU",
   			top : 60,
   			left : 10
   		});
   
   		win.add(buttonMenu);
   		win.add(buttonNext);
   
   		var navigation = Titanium.UI.iOS.createNavigationWindow({
   			backgroundColor : 'grey',
   			window : win,
   			width : width,
   			height : height,
   		});
   		
   		win.addEventListener('focus', function() {
   			Ti.API.log("win focus");
   		});
   
   		nextWin.addEventListener('focus', function() {
   			Ti.API.log("next win focus");
   		});
   
   		buttonNext.addEventListener('click', function() {
   			navigation.openWindow(nextWin);
   		}); 
   		
   		buttonMenu.addEventListener('click', function() {
   			toggleMenu();
   		}); 
   		
   		var animateLeft = Ti.UI.createAnimation({
   			left : 180,
   			curve : Ti.UI.ANIMATION_CURVE_EASE_OUT,
   			duration : 500
   		});
   		var animateRight = Ti.UI.createAnimation({
   			left : 0,
   			curve : Ti.UI.ANIMATION_CURVE_EASE_OUT,
   			duration : 500
   		});
   		
   		var toggleMenu = function() {
   			if (!isToggled) {
   				navigation.animate(animateLeft);
   				isToggled = true;
   			} else {
   				navigation.animate(animateRight);
   				isToggled = false;
   			}
   		};
   		
     		navigation.open();