[RF 4.1M1] rich:tooltip & showDelay request executed immediatly, delay not executed

[jadtn]

Hi

It's possible I've not understand the showdelay for rich:tooltip:

->what i understand : the request is executed after the delay and the the tooltip is shown.

->what i have : the request is immediately executed, the delay is executed and then the tooltip is shown.

Is it a bug?

Thanks

{code:xml}
<h:panelGroup rendered="#{ac.accountStatus =='V' and  not empty ac.urlPhotoCV}" style="float:left">
    <h:graphicImage styleClass="imgborder" id="imcvx" value="#{ac.urlPhotoCV}" alt="#{ac.userId}" />
     <rich:tooltip  target="imcvx" mode="ajax" followMouse="true" layout="block" showDelay="1000" >
               <h:graphicImage styleClass="imgborder" value="#{ac.urlPhoto}" height="350" alt="#{ac.userId}"/>
      </rich:tooltip>
 </h:panelGroup>
{code}