Af:query component added field not removed when remove icon is clicked

Question

I have an af:query component on a popup dialog. In advanced mode when I add a field, the new field appears in the searchRegion followed by a red X remove icon. If I subsequently click that remove icon, the query refreshes, the red icon is gone, but the newly added field still remains. The query component is linked to a standard VO query executable in the bindings. There is no custom processing of the value, model, queryListener or the queryOperationListener. In all other respects the query component works fine. The only problem is a newly added field not being removed when the remove icon is clicked. Here's how the component is setup (an added wrinkle is that the query component is hosted in a Declarative Component, so that makes this code a little harder to decipher).
Does anyone know where I should start looking for this? Hopefully I don't have to implement my own queryOperationListener.
JDev version is Build JDEVADF_11.1.1.4.0_GENERIC_101227.1736.5923
--- snippet from the page fragment ------
<af:popup id="frmsLstPU" contentDelivery="lazyUncached">
<af:dialog id="d1" type="ok"
styleClass="AFStretchWidth" resize="on"
stretchChildren="first" contentWidth="840"
contentHeight="480"
title="#{UnifiedResourceBundle['FORMSLIST.DIALOG.TITLE']}">
<idmkr_adf:Correspondence_Formslist_Query idmkr_query_model="#{bindings.FormVOFlatQueryCriteriaQuery}"
idmkr_table_binding="#{viewScope.FormsListBacking}"
idmkr_table_model="#{bindings.FormVOFlatQuery1}"
idmkr_bindings="#{bindings}"
idmkr_resourcebundle="#{preferences}"
idmkr_printStreamBean="#{viewScope.FormsList}"
id="cf1">
</idmkr_adf:Correspondence_Formslist_Query>
</af:dialog>
</af:popup>
-- snippet from the Correspondence_Formslist_Query declarative component ------
<af:query id="qryId1"
headerText="#{UnifiedResourceBundle['FORMSLIST.QUERY.SEARCH.TEXT']}"
disclosed="true"
value="#{attrs.idmkr_query_model.queryDescriptor}"
model="#{attrs.idmkr_query_model.queryModel}"
queryListener="#{attrs.idmkr_query_model.processQuery}"
queryOperationListener="#{attrs.idmkr_query_model.processQueryOperation}"
resultComponentId="::resId1" displayMode="default"
styleClass="AFStretchWidth"
rows="4" maxColumns="2"/>

Answer 1

I have changed the contentDelivery from "lazyUncached" to "immediate" and the same problem occurs. Thank your for your suggestion.