suggestionbox, doesn't refresh on first submit with firefox

[zenzen]

I'm having trouble with this component with Firefox...
In fact I display the popup menu correctly, but when I select one value, the input field is correctly update, but it doesn't update my page....

It's working greatly with IE and safari....

Here is my code :

<rich:suggestionbox for="suggest" minChars="3" immediate="true" focus="1" fetchValue="#{result.surname} #{result.firstname}" suggestionAction="#{SearchBean.autocomplete}" value="#{SearchBean.result}" var="result" ajaxSingle="true" selfRendered="false" >
 <h:column>
 <h:outputText value="#{result.surname}" />
 </h:column>
 <h:column>
 <h:outputText value="#{result.firstname}" />
 </h:column>
 <a4j:support event="onselect" action="#{SearchBean.actionSelect}" reRender="personview, resultview">
 <f:setPropertyActionListener value="#{result}" target="#{SearchBean.selectedPerson}" />
 </a4j:support>
 </rich:suggestionbox>
 </fieldset>
 </a4j:form>


 <a4j:outputPanel id="personview" ajaxRendered="true" >
 <div id="personinfo">
 <h:outputLabel rendered="#{(SearchBean.showInfo) and (not empty SearchBean.selectedPerson)}" for="person" value="Soutenances planifiées pour ">
 <h:outputText id="person" value="#{SearchBean.selectedPerson}" converter="PersonConverter"/>
 <h:outputText value=" :"/>
 </h:outputLabel>
 </div>

 <h:outputText id="error" rendered="#{not empty SearchBean.HTMLError}" value="#{SearchBean.HTMLError}"/>

 </a4j:outputPanel>

 <a4j:outputPanel id="resultview" ajaxRendered="true" >
 <h:dataTable id="trial" rendered="#{SearchBean.showInfo}" border="0" columnClasses="time,person" value="#{SearchBean.trialResult}" var="line">
 <h:column>
 <h:outputText value="Date : #{line.date}" /> <br />
 <h:outputText value="Heure : #{line.startTime}" />
 </h:column>
 <h:column>
 <h:outputText value="Apprenti : #{line.apprentice}" /> <br />
 <h:outputText value="Tuteur Enseignant : #{line.teacherTutor}" /> <br />
 <h:outputText value="Tuteur Ingénieur : #{line.engineerTutor}" /> <br />
 </h:column>
 </h:dataTable>
 </a4j:outputPanel>
 </a4j:region>

and the functions in my bean :

public List<PersonEntity> autocomplete(Object event) {

 String pattern = event.toString().toLowerCase();
 result.clear();
 selectedPerson = null;
 showInfo = false;

 for (PersonEntity pe : tmp) {
 if (pe.getFirstname().toLowerCase().contains(pattern)) {
 result.add(pe);
 continue;
 }
 if (pe.getSurname().toLowerCase().contains(pattern)) {
 result.add(pe);
 }
 }
 return result;
 }

 public String actionSelect() {
 if(prjd.isPlanningGenerated(paramsBean.getSelectedProject()) == false) {
 HTMLError = "Aucune soutenances planifiées pour le projet "+paramsBean.getSelectedProject().getProjectName();
 showInfo = false;
 return null;
 }
 HTMLError = null;
 showInfo = true;
 TrialDelegate td = new TrialDelegate();
 List<TrialEntity> trial = td.getAllTrials(paramsBean.getSelectedProject());
 trialResult.clear();
 for (TrialEntity trialEntity : trial) {
 if(trialEntity.getHtmlDescription().contains(selectedPerson.getSurname()) && trialEntity.getHtmlDescription().contains(selectedPerson.getFirstname())) {
 TrialInfoBean tib = TrialInfoBean.createTrialInfoBean(trialEntity);
 trialResult.add(tib);
 }
 }
 return null;
 }

What am I mising ?
Thanks a lot if you have any ideas....