title: The action in the commandButton does not get triggered
body: <p>The action in the commandButton does not get triggered. The method "addNewLanguageText()" is not invoked when the button is clicked. I tried changing process and update parameters but nothing has changed yet. I want the languageTextPanel to be updated with this button click. Am I missing something?</p>
  
  <pre><code>&lt;ui:define name="centerColumn"&gt;
      &lt;h:form id="notificationMessageEditForm"&gt;
  
          &lt;p:fieldset id="basicsPanel" styleClass="fieldSet"&gt;
              &lt;h:panelGroup id="languageTextTemplatePanelGroup"&gt;
                  &lt;table width="100%"&gt;
                      &lt;tr&gt;
                          &lt;td align="left"&gt;
                          &lt;/td&gt;
                          &lt;td align="right"&gt;
                              &lt;table&gt;
                                  &lt;tr&gt;
                                      &lt;td&gt;
                                          &lt;p:selectOneMenu id="fooNameId"
                                                           value="#{notificationGroupSupport.selectedLanguageKey}"&gt;
                                              &lt;f:selectItems var="item" value="#{referenceData.languages}"
                                                             itemLabel="#{item.description}"
                                                             itemValue="#{item.languageKey}"/&gt;
                                          &lt;/p:selectOneMenu&gt;
                                      &lt;/td&gt;
                                      &lt;td&gt;
                                          &lt;p:commandButton
                                                  value="Click"
                                                  action="#{notificationGroupSupport.addNewLanguageText()}"
                                                  process="languageTextTemplatePanel"
                                                  update="languageTextPanel" ajax="false" icon="#{icons.plus}"/&gt;
                                      &lt;/td&gt;
                                  &lt;/tr&gt;
                              &lt;/table&gt;
                          &lt;/td&gt;
                      &lt;/tr&gt;
                  &lt;/table&gt;
                  &lt;h:panelGroup id="languageTextPanel"&gt;
                      &lt;ui:repeat var="text"
                                 value="#{notificationGroupSupport.messageTexts}"&gt;
                          &lt;p:panel header="#{text.language.description}"&gt;
                              &lt;h:inputTextarea id="notificationMessageText"
                                               styleClass="#{text.language.languageKey}Textarea"
                                               style="width:99%; height:100px;"
                                               label="#{text.language.description}" value="#{text.value}"/&gt;
  
                              &lt;div&gt;
                                  &lt;ui:repeat var="cons"
                                             value="#{notificationGroupSupport.constants}"&gt;
                                      &lt;p:commandButton value="#{cons.replaceString}" type="button"
                                                       styleClass="#{text.language.languageKey}Button"/&gt;
                                  &lt;/ui:repeat&gt;
                              &lt;/div&gt;
                              &lt;p:commandButton actionListener="#{notificationGroupSupport.removeMessageText(text)}"
                                               ajax="false"
                                               update="languageTextPanel"
                                               value="Delete Message"
                                               icon="#{icons.delete}"
                                               rendered="#{auth.hasRole('ROLE_CATALOG_DATA_DELETE')}"&gt;
                              &lt;/p:commandButton&gt;
                          &lt;/p:panel&gt;
                          &lt;p:spacer height="8"/&gt;
                      &lt;/ui:repeat&gt;
                  &lt;/h:panelGroup&gt;
              &lt;/h:panelGroup&gt;
          &lt;/p:fieldset&gt;
      &lt;/h:form&gt;
  </code></pre>