[TIMOB-8293] iOS: Subsequently setting the html property of a webview does not show the changed html but shows blank content

// this sets the background color of the master UIView (when there are no windows/tab groups on it)
Titanium.UI.setBackgroundColor('#000');

// create tab group
var tabGroup = Titanium.UI.createTabGroup();


//
// create base UI tab and root window
//
var win1 = Titanium.UI.createWindow({  
    title:'Tab 1',
    backgroundColor:'#fff'
});
var tab1 = Titanium.UI.createTab({  
    icon:'KS_nav_views.png',
    title:'Tab 1',
    window:win1
});

var	button1 = Titanium.UI.createButton({
	title:'open webview window',
	width:220,
	height:40
});

win1.add(button1);

var winwebview = Titanium.UI.createWindow({  
    title:'Window with webview',
    backgroundColor:'#fff'
});

var webview = Titanium.UI.createWebView({
});

winwebview.add(webview);

var counter = 0;
button1.addEventListener('click',function(e)
{
   counter++;
   webview.html = '<h1>Counter is: ' + counter + '</h1>';
   tab1.open(winwebview,{animated:true});
});

//
// create controls tab and root window
//
var win2 = Titanium.UI.createWindow({  
    title:'Tab 2',
    backgroundColor:'#fff'
});
var tab2 = Titanium.UI.createTab({  
    icon:'KS_nav_ui.png',
    title:'Tab 2',
    window:win2
});

var label2 = Titanium.UI.createLabel({
	color:'#999',
	text:'I am Window 2',
	font:{fontSize:20,fontFamily:'Helvetica Neue'},
	textAlign:'center',
	width:'auto'
});

win2.add(label2);



//
//  add tabs
//
tabGroup.addTab(tab1);  
tabGroup.addTab(tab2);  


// open tab group
tabGroup.open();