[Titanium] TableView with TextView jumping when it gets focussed

app.js

Ti.UI.setBackgroundColor('#fff');

var tabGroup = Ti.UI.createTabGroup();

var win1 = Ti.UI.createWindow({  
    title:'Tab 1',
    backgroundColor:'#fff'
});

var tab1 = Ti.UI.createTab({  
    icon:'KS_nav_views.png',
    title:'Tab 1',
    window:win1
});

var label1 = Ti.UI.createLabel({
	color:'#999',
	text:'Open modal window',
	font:{fontSize:20,fontFamily:'Helvetica Neue'},
	textAlign:'center',
	width:'auto'
});

label1.addEventListener('click', function(e)
{

	var row = Ti.UI.createTableViewRow({
		className: 'control', 
		selectionStyle: Ti.UI.iPhone.TableViewCellSelectionStyle.NONE
	});
	
	var txt = Ti.UI.createTextField({
		hintText: 'Click me to see me jumping'
	});
	
	row.add(txt);
	
	var btnclose = Ti.UI.createButton({title: 'Close'});
	
	var winmodal = Ti.UI.createWindow({
		title:'TextView Jumping', 
		modal: true, 
		rightNavButton: btnclose
	});
	
	var tableview = Ti.UI.createTableView({data: [row]});
	
	btnclose.addEventListener('click', function(e){
		winmodal.close();
	});
	
	winmodal.add(tableview);
	winmodal.open();
});

win1.add(label1);

tabGroup.addTab(tab1);  
tabGroup.open();