I can't quite figure this one out, but I have a combo box that initially has an empty list (no items). Sometimes when running the application, clicking on the combo box button to display the list shows the empty list. Other times clicking the button has no effect and no list is shown. I can't understand why. When items are added to this list, it always shows. But sometimes it doesn't show when there are no items. Has anyone run into this before? Anyone have any ideas why this happens? Thanks.

- Steve