title: toggle with menu with Ext JS
body: <p>I'm working for hours on this problem but I didn't find any answers.
  I've got a toolbar with buttons and a menu:</p>
  
  <pre><code>new Ext.Toolbar({
      items: [
          {
              text: 'button1',
              toggleGroup: "draw",
              allowDepress: false,
              pressed: true,
          },
          {
              text: 'button2',
              toggleGroup: "draw",
              allowDepress: false,
              pressed: false,
          },
          {
              text: 'menu',
              enableToggle: true,
              menu: {
                  items: [
                      {
                          text: 'menuButton1',
                          toggleGroup: "draw",
                          allowDepress: false,
                      },
                      {
                          text: 'menuButton2',
                          toggleGroup: "draw",
                          allowDepress: false,
                      }
                  ]
  
              }
          }
      ]
  })
  </code></pre>
  
  <p>(this is just an example that's very close to my code)</p>
  
  <p>The problem:
  the toggling is not working. I want only one of the 4 buttons selected. Toggling with button1 and button2 is working but not with the menu buttons. Where is the problem?</p>