Captcha is not validated if it has rendered attribute

[vestnik]

I have requirement to check nonsuccessive login attempts and if it's greater then 3 show captcha on login page for this user. I've added boolean variable to my Authenticator class and added captcha with

rendered="#{authenticator.captchaRequired}"

attribute to my login view. It looks like captcha input is not validated at all. I've removed

rendered="..."

attribute and everything works correctly. Does anybody know how to handle this situation?

Here is my login form:

<h:form id="loginForm">

   <rich:panel>
      <f:facet name="header">#{messages['edupro.login.panelTitle']}</f:facet>

      <div class="dialog">
         <h:panelGrid columns="3" rowClasses="prop" columnClasses="name,value">
            <h:outputLabel for="email" value="#{messages['edupro.login.email']}"/>
            <h:inputText id="email"
                         value="#{credentials.username}"
                         title="#{messages['edupro.login.emailTooltip']}"
                         validator="emailFacesValidator"
                         required="true"/>
            <h:message for="email" styleClass="message" errorClass="errormsg"
                       infoClass="infomsg" warnClass="warnmsg"/>
                    
            <h:outputLabel for="password" value="#{messages['edupro.login.password']}"/>
            <h:inputSecret id="password"
                           value="#{credentials.password}" 
                           required="#{!empty param['loginForm:submit']}">
               <f:validateLength minimum="#{globalSettings.minPasswdLength}"
                                 maximum="#{globalSettings.maxPasswdLength}"/>
            </h:inputSecret>
            <h:message for="password" styleClass="message" errorClass="errormsg"
                       infoClass="infomsg" warnClass="warnmsg"/>
                    
            <h:graphicImage value="/seam/resource/captcha"
                            rendered="#{authenticator.captchaRequired}"/>
            <h:inputText id="verifyCaptcha" value="#{captcha.response}"
                         required="true"
                         rendered="#{authenticator.captchaRequired}">
               <s:validate />
            </h:inputText>
            <h:message for="verifyCaptcha" styleClass="message" errorClass="errormsg"
                       infoClass="infomsg" warnClass="warnmsg"
                       rendered="#{authenticator.captchaRequired}"/>
                    
         <h:panelGroup/>
         <h:commandButton id="submit" value="#{messages['edupro.login.submit']}"
                          action="#{authenticator.tryLogin}"/>
         <h:panelGroup/>
                    
         <h:panelGroup/>
         <h:panelGroup/>
         <h:commandLink id="recoverPassword"
                        value="#{messages['edupro.login.forgotPassword']}"
                        title="#{messages['edupro.login.forgotPasswordTooltip']}"
                        action="#{personalServices.recoverPassword}"/>
      </h:panelGrid>
   </div>

</rich:panel>

[vestnik]

Sorry, the problem was with incorrect work with long-running conversation. I've fixed it.