DayPIlotMonth - events that span 2 months are not displaying on calendar

I am using Navigator and Month controlsonthe same page. If I enter an event that starts in one month but ends in another, the event does not display on the Month calendar. All other events are displaying properly on the Month and the dates are shown as bold on the navigator.Is this a bug or am I supposed to do something special to make these multi-month events display on the month control?