There appears to be the introduction of an annoying new bug in swing1.0.2 in
regards to JComboBox, BasicComboPopup and JScrollPane. When a ComboPopup is
larger than the modal JDialog that contains it, the ComboPopup is clipped -
but no vertical scroll bar appears. We have seen two distinct instances of
abnormal behavior.

When a JComboBox is utilized as the renderer for a JTable. We have
recreated this behavior by modifying TableExample4 - the source is included
as an attachment.