trinidad panelChoice xhtml

[garfield335]

I have this xhtml file

<ui:composition xmlns="http://www.w3.org/1999/xhtml";
        xmlns:ui="http://java.sun.com/jsf/facelets";
        xmlns:h="http://java.sun.com/jsf/html";
        xmlns:f="http://java.sun.com/jsf/core";
        xmlns:tr="http://myfaces.apache.org/trinidad";>
 <f:view>
    <tr:document title="panelChoice Demo">
      <tr:form>
        <tr:panelCaptionGroup captionText="Recherche d'un mesurage">
                <tr:panelChoice label="Sélectionner méthode de recherche"
                        position="top" alignment="start">
                        <tr:showDetailItem text="A"
                                id="queryA">
                                <tr:panelHorizontalLayout>
                                
                                </tr:panelHorizontalLayout>
                        </tr:showDetailItem>
                        <tr:showDetailItem id="queryB"
                                text="B">
                                <tr:panelHorizontalLayout>
        
                                </tr:panelHorizontalLayout>
                        </tr:showDetailItem>
                </tr:panelChoice>
        </tr:panelCaptionGroup>
</tr:form>
</tr:document>
</f:view>
</ui:composition>

This PanelChoice doesn't work, only the first option is shown.
Why?
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