Java Development Tools

We're using JDeveloper 11.1.1.4.0 in Win XP/7 using IE7/8.

We have some large tables that have both horizontal and vertical scrollbars. When a user clicks on the vertical scrollbar and then drags it downward, the page automatically scrolls toward the right after data is fetched.

For example, if the column headers currently in view look like:
| Number | Status | Title | Descr

After scrolling down, the users would see:
mber | Status | Title | Descript

Our tables are fairly simple and are contained within a panelCollection. An example without all of the columns and menu items is:

<af:panelCollection id="pc1" styleClass="AFStretchWidth">
  <af:table value="#{bindings.ReadOnlyView.collectionModel}"
            var="row" rows="#{bindings.ReadOnlyView.rangeSize}"
            emptyText="#{bindings.ReadOnlyView.viewable ? 'No data to display.' : 'Access Denied.'}"
            fetchSize="#{bindings.ReadOnlyView.rangeSize}"
            rowBandingInterval="1"
            selectedRowKeys="#{bindings.ReadOnlyView.collectionModel.selectedRow}"
            selectionListener="#{bindings.ReadOnlyView.collectionModel.makeCurrent}"
            rowSelection="single" id="wTbl"
            columnSelection="single" displayRow="selected"
            binding="#{backing_query.wTbl}"
            contentDelivery="immediate"  
            clientComponent="true"
            summary="Read Only Table">
      ...
  </af:table>
</af:panelCollection>

The problem does not exist in Firefox. The table scrolls vertically but does not move horizontally (at least not automatically).

Is this just an IE issue or is there a way to prevent the right shift?

Thank you for your time.