Problem with CalendarDataModel getData() combined with timeZone attribute

[grundor]

We are using the rich:calendar control in an organizer type fashion similar to what is done in the RichFaces demo.

I have found that when I use the timeZone attribute to specify the desired timezone of the client, the block of dates passed into getData() is incorrect.

For example when I initially display the calendar, the first call to getData() is correct - we are currently in March, so date[0] passed to getData is March 1 EST, and date[30] is correctly set to March 31 EDT.  Now when I click the < button to browse to the previous month in the calendar, getData is passed an incorrect array of dates - date[0] is set to January 2 EST (instead of February 1) and date[29] is set to January 30 EST.  Essentially the start date is 1 month less than it should be and 1 day more.

The dates are off in a similar fashion no matter what method I use to browse to a different month of the calendar.

The server is running under EDT and the timeZone being specified to the calendar is PDT.

If I remove the timeZone attribute things start working as expected.

Here is my code where I create the calendar:

<rich:calendar popup="false" cellWidth="107px" 
     showFooter="false" showApplyButton="false" showWeeksBar="false"
     dataModel="#{calendarDataModel}"
     styleClass="organizer" mode="ajax"
     id="organizer" timeZone="#{timeZone}">
     <h:outputText value="{day}" style="font-size: 11px; font-weight:bold"/>
     <a4j:outputPanel layout="block" id="cell">
          <h:panelGrid columns="1" width="100%">
               <h:outputText escape="false" value="{description}"/>
          </h:panelGrid>
     </a4j:outputPanel>
</rich:calendar>

And the relevant parts of calendarDataModel class:

@Name("calendarDataModel")
@Scope(ScopeType.CONVERSATION)
public class CalendarDataModelImpl implements CalendarDataModel, java.io.Serializable {
    private static final long serialVersionUID = -6553800482303371625L;

    private CalendarDataModelItem[] items;
       
    @SuppressWarnings("unchecked")
    public CalendarDataModelItem[] getData(Date[] dateArray) {
        if ((dateArray == null) || (dateArray.length == 0)) {
            return null;
        }

       // Creates eventHash of events in current month (removed)
       
        // Now build out calendar data model
        items = new CalendarDataModelItem[dateArray.length];
        for (int i = 0; i < dateArray.length; i++) {
            items[i] = createDataModelItem(dateArray[i], eventHash.get(orgDateTime.getStartOfDay(dateArray[i])));
        }
    }
    return items;
}

Have I stumbled on a bug or could I be doing something wrong here?