I have the following snippet that does not trigger an ajax request however, if I simply change the selectOneRadio tag to selectOneMenu or selectOneListBox it will work. I have tried other events such as onclick with the same result.
This is using latest 3.3.1 GA release.
<h:panelGroup>
<a4j:outputPanel>
<a4j:region>
<h:selectOneRadio
id="x"
value="#{x.tableSelection}"
valueChangeListener="#{x.tableSwitch}">
<a4j:support event="onchange" reRender="y"/>
<s:convertEnum/>
<s:enumItem enumValue="a"
label="#{messages['x.page.a']}"/>
<s:enumItem enumValue="b"
label="#{messages['x.page.b']}"/>
</h:selectOneRadio >
</a4j:region>
</a4j:outputPanel>
</h:panelGroup>
