Check the following example. It shows the problem with rows data (only one column is visible at start). After resizing columns , the related data will be shown! :

Note that if I set flex:1 for the columns, everything would be ok but again if I change the sort of a column, all rows will be disappeared.



Code:



<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <link rel="stylesheet" type="text/css" href="http://ift.tt/SksbL0">
      <script type="text/javascript" src="http://ift.tt/1fYkZZL"></script>
</head>
<body>
<script>
Ext.onReady(function () {
Ext.create('Ext.data.Store', {
    storeId:'simpsonsStore',
    fields:['name', 'email', 'phone'],
    data:{'items':[
        { 'name': 'Lisa',  "email":"lisa@simpsons.com",  "phone":"555-111-1224"  },
        { 'name': 'Bart',  "email":"bart@simpsons.com",  "phone":"555-222-1234" },
        { 'name': 'Homer', "email":"homer@simpsons.com",  "phone":"555-222-1244"  },
        { 'name': 'Marge', "email":"marge@simpsons.com", "phone":"555-222-1254"  }
    ]},
    proxy: {
        type: 'memory',
        reader: {
            type: 'json',
            root: 'items'
        }
    }
});


Ext.create('Ext.grid.Panel', {
    title: 'Simpsons',
    rtl:true,
    store: Ext.data.StoreManager.lookup('simpsonsStore'),
    columns: [
        { text: 'Name',  dataIndex: 'name' },
        { text: 'Email', dataIndex: 'email' },
        { text: 'Phone', dataIndex: 'phone' }
    ],
    renderTo: Ext.getBody()
});
});
</script>
</body>
</html>