Primefaces inplace ajax listener not sending updated value

See more:

Java

XHTML

JSF

Hi,

I am working with a DataTable that can be expanded to show the variations of a product. This variation should be editable and I thought about the inplace componenet to do so. However, when trying to save, the new is not sent to the back-end.

Here is part of the xhtml

<h:form&gt;
   <p:dataTable id="grid-anuncios"
      value="#{gerenciadorAnuncioController.model}" 
      selection="#{gerenciadorAnuncioController.anunciosMLSelecionados}"
      rowKey="#{anuncio.id}"
      rowHover="false"
      editable="true"
      editMode="row"
      var="anuncio" 
      emptyMessage="Nenhum anúncio encontrado"
      rows="50"
      resizableColumns="true"
      styleClass="Top GrayBorder BoxShadow"
      paginator="true"
      lazy="true">

      <!--columns and stuff-->
      <p:rowExpansion>
         <div class="flexPanels">
            <ui:repeat value="#{anuncio.variations}"
               var="variacao">
               <p:outputPanel styleClass="panelVariacoes BoxShadowLight">
                  <div class="panelVariacoesHeader">
                     <p:graphicImage value="#{variacao.urlPrimeiraImagem}" styleClass="logoImage" />
                  </div>
                  <div class="panelVariacoesBody">
                     <p:outputPanel class="MarBot5 Fs15">
                        <h:outputText styleClass="FontLatoBold" value="Qtd: " />
                        <!-- The problem seems to be here -->
                        <p:inplace editor="true">
                           <p:ajax event="save" 
                                 process="@parent"
                                 listener="#{gerenciadorAnuncioController.gravarQuantidadeVariacao(anuncio, variacao)}"
                                 update=":growl-principal"/>
                           <f:facet name="output">
                              <h:outputText value="#{variacao.availableQuantity}" />
                           </f:facet>
                           <f:facet name="input">
                              <mml:inputNumber value="#{variacao.availableQuantity}"
                                    required="true"
                                    type="integer"
                                    styleClass="Wid70px"/>
                           </f:facet>
                        </p:inplace>
                     </p:outputPanel>
                     <div class="Separator"></div>
                     <ui:repeat value="#{variacao.attributeCombinations}" var="atributo">
                        <div class="JC-FlexBox MarBot5 Fs15">
                           <h:outputText styleClass="FontLatoBold" value="#{atributo.name}: " />
                           <h:outputText value="#{atributo.valueName}" />
                        </div>
                     </ui:repeat>
                  </div>
               </p:outputPanel>
            </ui:repeat>
         </div>
      </p:rowExpansion>
   <p:dataTable>
<h:form>

If Debugged, when the inplace is clicked, the gravarQuantidadeVariacao method will have availableQuantity with the previous value, not the new one. I've reserched quite a lot about this issue, but I couldn't find anything similar. Can anyone help?

What I have tried:

So far I've tried to use different listeners and on click events, but the result is always the same.
I went through the primefaces documentation, but it provided little help a apart from the possibility to manually creating a save button inside the inplace. But that would be a patchwork on something that should/has to be working.
The current inplace/ajax call works everywhere else but here.. So I'm kind of without any ideas on what to do