title: ExtJS 4.2: ToolTips not wide enough to see contents
body: <p>I've noticed since upgrading to ExtJS 4.2 that tooltips displayed when a textfield has an error in it are not wide enough to see the contents of the tooltip - they always seem to be 40px wide.</p>
  
  <p>Here's a test case which shows the problem:</p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
      &lt;title&gt;Field error tooltips&lt;/title&gt;
      &lt;link rel="stylesheet" type="text/css" href="ext-4.2.0/resources/css/ext-all.css"&gt;
      &lt;script type="text/javascript" src="ext-4.2.0/ext-all-debug.js"&gt;&lt;/script&gt;
  &lt;/head&gt;
  &lt;body&gt;
      &lt;script type="text/javascript"&gt;
      Ext.onReady(function(){
  
          var form = Ext.create("Ext.form.Panel",{
              title: 'My form',
              width: 300,
              height: 100,
              items: [
                  {xtype: 'textfield', name: 'FIELD1', fieldLabel: 'Field 1', allowBlank: false}
              ],
              renderTo: Ext.getBody()
          });
      });
      &lt;/script&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>In the above example if you click the field and then click out of it without typing anything, it shows a tooltip saying that it's not allowed to be blank. The tooltip is not wide enough to see the message unfortunately. Has anyone else come across this?</p>
  
  <p>Thanks!</p>