Hi guys,

The grouped list view's pin header feel confused.
bug.jpgfine.jpg
https://github.com/nelstrom/Sencha-Touch-list-view-demo works fine.please see the screenshot above.

Code:
Ext.define('Contact', {
    extend: 'Ext.data.Model',
    fields: ['firstName', 'lastName']
});


Ext.application({ 
    name: "ListDemo",


    launch: function(){
        var store = Ext.create('Ext.data.JsonStore', {
            model: 'Contact',
            sorters: 'lastName',


            getGroupString: function(record) {
               return record.get('lastName')[0];
            },
            data: [
                {firstName: 'Tommy',   lastName: 'Maintz'},
                {firstName: 'Rob',     lastName: 'Dougan'},
                {firstName: 'Ed',      lastName: 'Spencer'},
                {firstName: 'Jamie',   lastName: 'Avins'},
                {firstName: 'Aaron',   lastName: 'Conran'},
                {firstName: 'Dave',    lastName: 'Kaneda'},
                {firstName: 'Jacky',   lastName: 'Nguyen'},
                {firstName: 'Abraham', lastName: 'Elias'},
                {firstName: 'Jay',     lastName: 'Robinson'},
                {firstName: 'Nigel',   lastName: 'White'},
                {firstName: 'Don',     lastName: 'Griffin'},
                {firstName: 'Nico',    lastName: 'Ferrero'},
                {firstName: 'Nicolas', lastName: 'Belmonte'},
                {firstName: 'Jay',     lastName: 'Robinson'},
                {firstName: 'Nigel',   lastName: 'White'},
                {firstName: 'Don',     lastName: 'Griffin'},
                {firstName: 'Nico',    lastName: 'Ferrero'},
                {firstName: 'Nicolas', lastName: 'Belmonte'},
                {firstName: 'Jason',   lastName: 'Johnston'}
            ]
        });
        
       var listPanel = Ext.create('Ext.List', {
            store: store,
            allowDeselect: false,
            itemTpl: '<div class="contact">{firstName} {lastName}</div>',
            onItemDisclosure: function(record, btn, index) {
                console.log('in');
            },
            grouped: true
            //indexBar: true
        });
        
        Ext.Viewport.add(listPanel);


  }
});