title: TextArea Issue - Text within Angle Brackets Disappears while Typing
body: <p>When a user enters text that includes angle brackets, the text and the brackets disappear after the closing bracket key is entered into the <code>TextArea</code> on the dialog. </p>
  
  <p>Here is a code snippet:</p>
  
  <pre><code>var some_textarea = new Ext.form.TextArea({
      id: 'some_textarea',
      name: 'name',
      hiddenName: 'name',
      fieldLabel: 'Field Label',
      width: 486,
      height: 150,
      autoScroll: true,
      labelSeparator: Common.required_asterisk,
      allowBlank: false,
      blankText: 'Data is required',
      emptyClass: 'required-textfield',
      emptyText: ' ',
      msgTarget: 'under'
  });
  </code></pre>
  
  <p>Any idea on how to allow the entry of angle brackets (in a WYSIWYG fashion) is greatly appreciated. Thanks.</p>