[TIMOB-8067] MobileWeb: Window - The focus event isn't firing each time and reports undefined for the source.name

var tabGroup = Ti.UI.createTabGroup();

var win1 = Ti.UI.createWindow({
	name: "win 1"
});
var tab1 = Ti.UI.createTab({
	name: "Tab 1",
	title:'Tab 1',
	window:win1
});

var win2 = Ti.UI.createWindow({
	name: "win 2",
	title:'Tab 2',
	backgroundColor:'#fff'
});
var tab2 = Ti.UI.createTab({
	name: "Tab 2",
	title:'Tab 2',
	window:win2
});

tabGroup.addTab(tab1);
tabGroup.addTab(tab2);

tabGroup.addEventListener('focus', function(e){
	Ti.API.info('-------------> tabGroup focus event fired! - ' + e.source.name);
});
tab1.addEventListener('focus', function(e){
	Ti.API.info('-------------> tab1 focus event fired! - ' + e.source.name);
});
tab2.addEventListener('focus', function(e){
	Ti.API.info('-------------> tab2 focus event fired! - ' + e.source.name);
});
win1.addEventListener('focus', function(e){
	Ti.API.info('-------------> win1 focus event fired! - ' + e.source.name);
});
win2.addEventListener('focus', function(e){
	Ti.API.info('-------------> win2 focus event fired! - ' + e.source.name);
});

tab1.addEventListener('blur', function(e){
	Ti.API.info('**************> tab1 blur event fired! - ' + e.source.name);
});
tab2.addEventListener('blur', function(e){
	Ti.API.info('**************> tab2 blur event fired! - ' + e.source.name);
});
win1.addEventListener('blur', function(e){
	Ti.API.info('**************> win1 blur event fired! - ' + e.source.name);
});
win2.addEventListener('blur', function(e){
	Ti.API.info('**************> win2 blur event fired! - ' + e.source.name);
});

tabGroup.open();