Data from inputText within popup is not saved

When modifying the node description using the inputText (the one from the popup) and pressing "Submit", the description is not saved to the bean.

<%@ page contentType="text/html; charset=ISO-8859-1" %>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="http://myfaces.apache.org/sandbox" prefix="s"%>
<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %>
<%@ taglib uri="http://myfaces.apache.org/tomahawk" prefix="t"%>
<h:form id="treedemoForm">
<t:tree2 id="mytree" value="#

{treedemo.treeData}"
var="node" varNodeToggler="t" clientSideToggle="true">
<f:facet name="normal">
<h:panelGroup id="mypanelgroup">
<t:popup styleClass="popup"
closePopupOnExitingElement="true"
closePopupOnExitingPopup="true"
displayAtDistanceX="1"
displayAtDistanceY="1">
<h:outputText value="#{node.description}"/>
<f:facet name="popup">
<h:panelGroup>
<h:panelGrid columns="2" align="left"
styleClass="gridTable" cellpadding="5" cellspacing="0"
columnClasses="gridLabelColumn,gridInputColumn,gridErrorColumn">
<h:outputText value="Descr"/>
<h:inputText value="#{node.description}" />
<h:outputFormat value="Submit -> "/>
<h:commandButton value="Submit"/>
</h:panelGrid>
</h:panelGroup>
</f:facet>
</t:popup>
</h:panelGroup>
</f:facet>
</t:tree2>
</h:form>

I have removed the popup and placed the inputText directly on the form; the description does get saved to the bean:

<h:form id="treedemoForm">
<t:tree2 id="mytree" value="#{treedemo.treeData}

"
var="node" varNodeToggler="t" clientSideToggle="true">
<f:facet name="normal">
<h:panelGroup id="mypanelgroup">
<h:outputText value="#

{node.description}"/>
<h:panelGroup>
<h:panelGrid columns="2" align="left"
styleClass="gridTable" cellpadding="5"
cellspacing="0"
columnClasses="gridLabelColumn,gridInputColumn,gridErrorColumn">
<h:outputText value="Descr"/>
<h:inputText value="#{node.description}

" id="descr"/>
<h:outputFormat value="Submit -> "/>
<h:commandButton value="Submit"/>
</h:panelGrid>
</h:panelGroup>
</h:panelGroup>
</f:facet>
</t:tree2>
</h:form>