title: Loading appears when I click on combobox, how to avoid it?
body: <p>I have 2 combobox, when i click on second combobox the loading appears and it remain there till I click on list item. I dont want loading to appear on second combo. </p>
  
  <p>I have 2 combobox, when i click on second combobox the loading appears and it remain there till I click on list item. I dont want loading to appear on second combo. </p>
  
  <pre><code>var UnitPanel = Ext.create('Ext.panel.Panel', {
                  itemId:'dsUnitPanel',
                  border:0,
                  items:[UnitGrid,{
                  xtype:'combobox',
                  tpl: '&lt;tpl for="."&gt;&lt;div class="x-boundlist-item" &gt;{name} [{freeSize} GB Free] &lt;/div&gt;&lt;/tpl&gt;',
                  style:'margin:10px;',
                  fieldLabel: 'A Group(*)',
                  editable:false,
                  bodyStyle:'padding-left:10px;',
                  store: dsAStore,
                  valueField:'name',
                  displayField:'name',
                  //forceSelection: true,
                  multiSelect: false,
                  name: 'txtMode',
                  id:'dsVolumeGroupId',
                  queryMode: 'local',
                  triggerAction: 'all',
                  emptyText:'Select A Group', 
                  listeners: {                
                      select: function(combo, record, index) {    
  
                       this.getStore().each(function(r){                  
  
                           if(combo.getValue() == r.data['name'])
                           {
                              selectedDsVg = combo.getValue();
                              selectedDsVgFreeSize = r.data['freeSize'];                                              
                           }
                       });
  
                    } ,
  
                    'focus':function()
                    { 
  
                       if(selectedDsWizardIndex == null)
                       {
                           Ext.MessageBox.alert('Error', 'Please select at least one Array',function(){
                                  enableTabIndexing();
                               });    
  
                       }
                    }
  
                  }
              },
              {
                  xtype:'combobox',
                  style:'margin:10px;',
                  fieldLabel: 'B Group(*)',
                  editable:false,
                  bodyStyle:'padding-left:10px;',
                  loadMask: false,
                  store: BGroupStore,
                  valueField:'value',
                  displayField:'name',
                  multiSelect: false,
                  name: 'dsBGroupId',
                  id:'dsBGroupId',
                  queryMode: 'local',
                  triggerAction: 'all',
                  //disabled:true,
                  emptyText:'Select B Group', 
                  listeners: {                
                      select: function(combo, record, index) {    
  
                          //store.on('load', function () { this.getPicker().setLoading(false); }, this);
                          this.getStore().loadMask.hide();
                       this.getStore().each(function(r){                  
  
                           if(combo.getValue() == r.data['value'])
                           {
                               alert('Select');
                              bGroupName = r.data['name'];                                                    
                           }
                       });
  
                    },
  
                    'focus':function()
                    {           
                       if(selectedDsWizardIndex == null)
                       {
                           Ext.MessageBox.alert('Error', 'Please select at least one',function(){
                                  enableTabIndexing();
                               });    
  
                       }
                    }
  
  
                  }
              }
  </code></pre>
  
  <p>Please suggest.</p>