Touch end not fired if going from window A to B

Hi,

I am working on a facebook menu and currently work in Ti Mobile 1.8.2 android. When tracking touchstart from window A and releaseing (touchend) in window B the touchend event is not fired. It is fired when releasing it inside window A. The code is as following:

// Facebook like menu window
var leftMenu    = Ti.UI.createWindow({
    backgroundColor: 'red',
    top:   0,
    left:  0,
    width: 150,
    zIndex: 1
});
var data = [{title:"Row 1"},{title:"Row 2"},{title:"Row 3"},{title:"Row 4"}];
var tableView   = Ti.UI.createTableView({ data: data });
leftMenu.add(tableView);
leftMenu.open();
 
 
// animations
var animateLeft = Ti.UI.createAnimation({
    left: 150,
    duration: 500
});
var animateRight    = Ti.UI.createAnimation({
    left: 0,
    duration: 500
});
 
var win1 = Titanium.UI.createWindow({
    backgroundColor: 'white',
    title: 'Facebook menu',
    left: 0,
    zIndex: 10
});
 
var touchStartX = 0;
var touchStarted = false;
 
win1.addEventListener('touchstart',function(e)
{
    touchStarted = true;
    touchStartX = e.x;
});
 
win1.addEventListener('touchend',function(e)
{
    touchStarted = false;
 
    if(touchStartX - e.x > 0)
    {
        win1.animate(animateRight);
    }
    else
    {
        win1.animate(animateLeft);  
    }
});
leftMenu.addEventListener('touchend', function(e)
{
    alert("dafuq?");    
});
 
win1.open();

Does anyone have this as well?