[TIMOB-11538] iOS: SplitWindow loses 'visible' event

var win0 = Ti.UI.createWindow({
	navBarHidden : true,
	backgroundColor : 'white'
});

var win1 = Ti.UI.createWindow({
	backgroundColor : 'red'
});

var masterView = Ti.UI.createWindow({
	backgroundColor : 'blue'
});

var nav = Ti.UI.iPhone.createNavigationGroup({
	window : win1
});

var master = Ti.UI.iPhone.createNavigationGroup({
	window : masterView
});

var splitwin = Ti.UI.iPad.createSplitWindow({
	detailView : nav,
	masterView : master
});

var win2 = Ti.UI.createWindow({
	backgroundColor : 'green'
});

var masterView2 = Ti.UI.createWindow({
	backgroundColor : 'purple'
});

var nav2 = Ti.UI.iPhone.createNavigationGroup({
	window : win2
});

var master2 = Ti.UI.iPhone.createNavigationGroup({
	window : masterView2
});

var splitwin2 = Ti.UI.iPad.createSplitWindow({
	detailView : nav2,
	masterView : master2
});

splitwin.addEventListener('visible', function(e) {
	if (e.view == 'detail') {
		e.button.title = "Master";
		win1.leftNavButton = e.button;
	} else if (e.view == 'master') {
		win1.leftNavButton = null;
	}
});

splitwin2.addEventListener('visible', function(e) {
	if (e.view == 'detail') {
		e.button.title = "Master";
		win2.leftNavButton = e.button;
	} else if (e.view == 'master') {
		win2.leftNavButton = null;
	}
});

var mainNavigation = Ti.UI.iPhone.createNavigationGroup({
	window : win0
});

var backButton1 = Ti.UI.createButton({
	title : 'Back'
});

backButton1.addEventListener("click", function(e) {
	mainNavigation.close(splitwin);
});

masterView.leftNavButton = backButton1;

var backButton2 = Ti.UI.createButton({
	title : 'Back'
});

backButton2.addEventListener("click", function(e) {
	mainNavigation.close(splitwin2);
});

masterView2.leftNavButton = backButton2;

var launchButton2 = Ti.UI.createButton({
	title : 'Launch SplitView'
});

launchButton2.addEventListener('click', function() {

	mainNavigation.open(splitwin2);

});

win1.add(launchButton2);

var launchButton1 = Ti.UI.createButton({
	title : 'Launch SplitView'
});

launchButton1.addEventListener('click', function() {

	mainNavigation.open(splitwin);

});

win0.add(launchButton1);

var rootWin = Ti.UI.createWindow({
	navBarHidden : true
});

rootWin.add(mainNavigation);

rootWin.open();