p:commandButton doesn't work inside tabview - jsf-2

Question

I'm trying to show a dialog using a p:commandButton, the p:commandButton is inside a tabView. I tried this way but without sucess, am I missing something? Thx
<p:tab title="Observations">
<div class="field select-field clearfix">
<label>Bloc</label>
<h:panelGroup layout="block" styleClass="actions">
<h:form>
<p:commandButton value="Add" styleClass="add"
action="#{blocCtrl.initBlocSetting}"
update=":dialog2" oncomplete="add_bloc.show()">
</p:commandButton>
</h:form>
</h:panelGroup>
<p:dialog id="dialog2" header="Bloc" modal="true"
widgetVar="add_bloc" minHeight="40" width="895">
<div class="popup-body">
<h:form>
<h:panelGroup layout="block"
styleClass="popup-field clearfix last">
<label class="the-label">Type bloc*</label>
<div class="the-field">
<h:inputText
value="#{blocCtrl.blocSettings.type}"
required="true"
requiredMessage="Error" />
</div>
</h:panelGroup>
<div class="popup-actions">
<button
onclick="$('.ui-dialog-titlebar-close').trigger('click');return false;"
class="red-btn">Annuler</button>
<h:commandButton value="OK" type="submit"
action="#{blocCtrl.addBlocSetting}"
update="add_messagePanel"
oncomplete="if(args && args.success){add_bloc.hide();}"
styleClass="green-btn" />
</div>
</h:form>
</div>
</p:dialog>
</div>

Answer 1

I had the same situation and after removing form tag before p:tabView it started to work
<h:form>
<p:tabView>
<p:tab title="title">
<h:form>
<p:commandButton actionListener="... />
</h:form>
</p:tab>
</p:tabView>
</h:form>