title: Error in define combobox
body: <p>I use extjs mvc and i define combobox</p>
  
  <pre><code>Ext.define('Ext.view.Common.PersonageComboBox', {
      extend: 'Ext.form.ComboBox',
      alias: 'widget.PersonageComboBox',
      minChars: 0,
      store: 'PersonageStore',
      style: 'float: right;',
      valueField: 'Id',
      displayField: 'Title',
      typeAhead: true,
      hideLabel: false,
      hideTrigger: true,
      width: 300,
      queryMode: 'server',
      listConfig: {
          loadingText: 'درحال جستجو',
          getInnerTpl: function () {
              return '{Title} - {Type}&lt;br /&gt;';
              }
          }
  });
  </code></pre>
  
  <p>and in controller i defin in</p>
  
  <pre><code>extend: 'Ext.app.Controller',
  requires: ['Profiler.resource.Icon', 'Profiler.resource.Size'],
  stores: ['PhoneTypeStore',
      'PhoneStore',
      'EmailStore',
      'SettingStore',
      'AgentStore',
      'PersonageStore'],
  models: [
      'PhoneInfo',
      'PhoneTypeInfo',
      'EmailInfo',
      'SettingInfo'],
  views: [
      'Common.PersonageComboBox',
      'Personage.PhoneGrid',
      'Personage.PhoneAssignment',
      'Personage.EmailGrid',
      'Personage.Settings',
      'Personage.AgentGrid'
  ],
  refs: [{
      ref: 'phone',
      selector: 'PhoneList'
  }, {
      ref: 'PhoneAssignment',
      selector: 'PhoneAssignment'
  }, {
      ref: 'EmailList',
      selector: 'EmailList'
  }],
  </code></pre>
  
  <p>and this is my model </p>
  
  <pre><code>Ext.define('Profiler.model.PersonageInfo', {
      extend: 'Ext.data.Model',
      fields: [{ name: 'Id', type: 'int' },
          'Title', 'Type'],
  });
  </code></pre>
  
  <p>but my page is White and dose not have error</p>