[TIMOB-9955] Android: ScrollView with a wrap view becomes unscrollable on android Ti 2.1

var win = Ti.UI.createWindow({
        backgroundColor : 'white'
    }); 
var scrollView = Ti.UI.createScrollView({
    top : 44,
    left : 0,
    right : 0,
    bottom : 0,
    showVerticalScrollIndicator : true,
    showHorizontalScrollIndicator : true,
    canCancelEvents : false,
    zIndex : 10
});
 
var view = Ti.UI.createView({
	backgroundColor:'blue',
    left : "4%",
    right : "4%",
    layout: 'vertical',
    top : 0
});
 
for (var i = 0; i < 20; i++) {
    var v = Ti.UI.createLabel({
    	backgroundColor: 'green',
        height : 50,
        top : 50,
        text : i
    });
    view.add(v);
};

contentHeight = 2050;
scrollView.contentHeight = view.height = contentHeight;
 
scrollView.add(view);
win.add(scrollView);
win.open();