title: JSF + PrimeFaces: `update` attribute does not update component
body: <p>Here is my layout</p>
  
  <pre><code>&lt;div id="mainPanel"&gt;
     &lt;div id="padding"&gt;
         &lt;h:outputText id="text" value="Personal Feed" rendered="#{Profile.renderComment}"/&gt;
     &lt;/div&gt;
     &lt;div id="right"&gt;
         &lt;h:form&gt;
             &lt;p:commandButton value="Update" actionListener="#{bean.toggleComment}" update="text" /&gt;
         &lt;/h:form&gt;
     &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>When I click the link <code>Update</code>, which is supposed to toggle the <code>renderComment</code> boolean on and off, it does not toggle the display of the text <code>Personal Feed</code>. Now if I put a form  around the <code>h:outputText</code>, and <code>update</code> the <code>form</code> instead, then it works. Why is that?</p>