in a TabPanel data of a grid is currently not rendered if I reload the data from my backend and the tab thats the container of the grid is not the activeTab. If it´s the activeTab data is rendered correctly.

Have a look at the following example.
When "First tab" is active and I press the "Refresh" button the new data is not rendered in the grid of "Second tab". The initial store.loadData inside initComponent works fine.

Any clues or is it a bug of the early preview version?

PHP Code:
Ext.require([
    
'Ext.grid.*',
    
'Ext.data.*',
    
'Ext.util.*',
    
'Ext.state.*'
]);

Ext.define('SO.ux.dummy.GridInTabpanel', {
     
extend'Ext.panel.Panel',
    
     
myData: [
        {
company:'3m Co'change:71.72pctChange0.02},
        {
company:'Alcoa Inc'change:29.01pctChange0.42},
        {
company:'Altria Group Inc'change:83.81pctChange0.28},
        {
company:'American Express Company'change:52.55pctChange:0.01}
     ],

    
initComponent: function() {
        var 
store Ext.create('Ext.data.ArrayStore', {
            
fields: [
               {
name'company'},
               {
name'change',     type'float'},
               {
name'pctChange',  type'float'}
            ],
            
//data: this.myData
        
});
        
        
store.loadData(this.myDatafalse);
        
        
        
Ext.apply(this, {
            
xtype'panel',
            
layout'fit',
            
minWidth100,
            
minHeight100,
            
title'Container',
            
items: [{
                
xtype'tabpanel',
                
activeTab0,
                
defaults: {
                    
labelWidth150
                
},
                
deferredRenderfalse,
                
layoutConfig: {
                    
deferredRenderfalse
                
},
                
ref'../../editPanel',
                
id'editPanel',
                
items: [
                    {
                        
xtype'panel',
                        
layout'vbox',
                        
title'First Tab',
                        
items: [
                            {
                                
xtype'textfield',
                                
width400,
                                
fieldLabel'Name',
                                
name'name',
                                
id'name'
                            
}
                        ]
                    },
                    {
                        
xtype'panel',
                        
title'Second Tab',
                        
layout'fit',
                        
autoHeighttrue,
                        
autoScrolltrue,
                        
items: [
                            {
                                
xtype'gridpanel',
                                
storestore,
                                
autoHeighttrue,
                                
stripeRowstrue,
                                
autoExpandColumn1,
                                
id'myGrid',
                                
headers: [{
                                    
id       :'company',
                                    
text   'Company',
                                    
//width: 120,
                                    
flex1,
                                    
sortable true
                                    
dataIndex'company'
                                
},{
                                    
text   'Change'
                                    
width    75
                                    
sortable true
                                    
renderer this.change
                                    
dataIndex'change'
                                
},{
                                    
text   '% Change'
                                    
width    75
                                    
sortable true
                                    
renderer this.pctChange
                                    
dataIndex'pctChange'
                                
}]
                            }
                        ]
                    }
                    ]
            }],
            
dockedItems: [{
                
xtype'toolbar',
                
dock'top',
                
items: [{
                        
xtype'button',
                        
text'Refresh',
                        
id'btnRefresh'
                
}]
            }]
        });
        
this.callParent(arguments);
        
        
Ext.getCmp('btnRefresh').on('click'this.onRefreshthis);
    },
    
    
onRefresh: function() {
        var 
localData = [
                 {
company:'ABC'change71.72pctChange0.02},
                 {
company:'DEF'change29.01pctChange0.42},
                 {
company:'GHI'change83.81pctChange0.28}
             ]
        var 
store Ext.getCmp('myGrid').store;
        
store.loadData(localDatafalse);
             
        
Ext.Msg.alert('Refresh''Data has been refreshed');
    }
    
});