Can't change background when using grouped tableview

Hi guys,

Since updating to the new iOS6 I can't change the views background image or color when using grouped table view. Is this a bug in Titanium at the moment or does Apple not allow you to do that anymore? Here is an example of my code below:

var newsWin = Ti.UI.currentWindow;
newsWin.backgroundColor = '#895163';
 
var tblNews = Ti.UI.createTableView({
    rowHeight: 50,
    style: Ti.UI.iPhone.TableViewStyle.GROUPED,
    backgroundColor: 'transparent',
    rowBackgroundColor: '#fff'
});

I've been struggling with the same problem - if using the latest SDK fixes the problem (I'm using the 15/09/12 release) then it'll be a lifesaver for me. Also, that link to the latest builds is very useful - you should put that on the front page of the Appcelerator homepage in a massive button :)