[TIMOB-18165] iOS: Size animation broken

var win = Ti.UI.createWindow({
        backgroundColor:'blue',
        modal:false
    });
    
    var holder = Ti.UI.createView({
    	width:200,
    	height:30,
    	backgroundColor:'gray'
    })
    var progress = Ti.UI.createView({
    	left:0,
    	top:0,
    	bottom:0,
    	width:'0%',
    	backgroundColor:'green'
    })
    
    holder.add(progress);
    win.add(holder);
    
    var value = 0
    setInterval(function (){
    	value = (value + 10) % 100
    	progress.animate({
        	width:(value + '%'), duration:100
        })
    }, 1000)


    win.open();