title: Combobox + XTemplate trouble
body: <p>Folloving example shows normal combobox until I use <code>XTemplate</code>. After applying <code>XTemplate</code> combobox items become unclickable (no highlight on hover and no choosing by click).</p>
  
  <pre><code>    Ext.onReady(function () {
          var states = Ext.create('Ext.data.Store', {
              fields: ['abbr', 'name'],
              data: [
                  { "abbr": "AL", "name": "Alabama" },
                  { "abbr": "AK", "name": "Alaska" },
                  { "abbr": "AZ", "name": "Arizona" }
              ]
          });
  
          Ext.create('Ext.form.ComboBox', {
              fieldLabel: 'Choose State',
              store: states,
              queryMode: 'local',
              displayField: 'name',
              valueField: 'abbr',
              renderTo: 'divId',
              tpl: new Ext.XTemplate(
                  '&lt;tpl for="."&gt;&lt;div class="x-combo-list-item"&gt;{name}&lt;/div&gt;&lt;/tpl&gt;')
          });
      }
  </code></pre>