Program: 3842
Project: 3842
Buggy source:
public MorePopupPanel(){
  FilterResources resources=getResources();
  setBorder(BorderFactory.createLineBorder(resources.getPopupBorderColor(),2));
  setLayout(new BorderLayout());
  titlePanel.setBackground(resources.getPopupHeaderBackground());
  titlePanel.setBorder(BorderFactory.createEmptyBorder(1,3,1,1));
  titlePanel.setLayout(new BorderLayout());
  titleLabel.setForeground(resources.getPopupHeaderForeground());
  titleLabel.setFont(resources.getPopupHeaderFont());
  titleLabel.setText(I18n.tr("String_Node_Str",getPropertyText()));
  closeButton.setBorder(BorderFactory.createEmptyBorder(0,3,3,3));
  closeButton.setContentAreaFilled(false);
  closeButton.setForeground(resources.getPopupHeaderForeground());
  closeButton.setIcon(resources.getPopupCloseIcon());
  closeButton.addMouseListener(new RolloverCursorListener());
  closeButton.addActionListener(new ActionListener(){
    @Override public void actionPerformed(    ActionEvent e){
      hidePopup();
    }
  }
);
  moreList.setCellRenderer(new PropertyCellRenderer(BorderFactory.createEmptyBorder(1,4,0,1)));
  moreList.setFont(resources.getRowFont());
  moreList.setForeground(resources.getRowColor());
  moreList.setOpaque(false);
  moreList.setRolloverEnabled(true);
  moreList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
  moreList.setHighlighters(new ColorHighlighter(HighlightPredicate.ROLLOVER_ROW,resources.getHighlightBackground(),resources.getHighlightForeground()));
  moreList.addMouseListener(new RolloverCursorListener());
  EventListModel<Object> listModel=new EventListModel<Object>(uniqueList);
  popupSelectionModel=new EventSelectionModel<Object>(uniqueList);
  moreList.setModel(listModel);
  moreList.setSelectionModel(popupSelectionModel);
  popupSelectionModel.addListSelectionListener(new SelectionListener(popupSelectionModel));
  scrollPane.setBorder(BorderFactory.createEmptyBorder());
  scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
  scrollPane.setViewportView(moreList);
  popupMenu.setBorder(BorderFactory.createEmptyBorder());
  popupMenu.setFocusable(false);
  popupMenu.addPopupMenuListener(new PopupMenuListener(){
    @Override public void popupMenuCanceled(    PopupMenuEvent e){
    }
    @Override public void popupMenuWillBecomeInvisible(    PopupMenuEvent e){
      if (popupTriggered) {
        popupReady=false;
      }
 else {
        popupReady=true;
      }
    }
    @Override public void popupMenuWillBecomeVisible(    PopupMenuEvent e){
      popupTriggered=true;
    }
  }
);
  add(titlePanel,BorderLayout.NORTH);
  add(scrollPane,BorderLayout.CENTER);
  titlePanel.add(titleLabel,BorderLayout.CENTER);
  titlePanel.add(closeButton,BorderLayout.EAST);
  popupMenu.add(this);
}

Fixed version (ground truth):
public MorePopupPanel(){
  FilterResources resources=getResources();
  setBorder(BorderFactory.createLineBorder(resources.getPopupBorderColor(),2));
  setLayout(new BorderLayout());
  titlePanel.setBackground(resources.getPopupHeaderBackground());
  titlePanel.setBorder(BorderFactory.createEmptyBorder(1,3,1,1));
  titlePanel.setLayout(new BorderLayout());
  titleLabel.setForeground(resources.getPopupHeaderForeground());
  titleLabel.setFont(resources.getPopupHeaderFont());
  titleLabel.setText(I18n.tr("String_Node_Str",getPropertyText()));
  closeButton.setBorder(BorderFactory.createEmptyBorder(0,3,3,3));
  closeButton.setContentAreaFilled(false);
  closeButton.setForeground(resources.getPopupHeaderForeground());
  closeButton.setIcon(resources.getPopupCloseIcon());
  closeButton.addMouseListener(new RolloverCursorListener());
  closeButton.addActionListener(new ActionListener(){
    @Override public void actionPerformed(    ActionEvent e){
      hidePopup();
    }
  }
);
  moreList.setCellRenderer(new PropertyCellRenderer(getBackground(),BorderFactory.createEmptyBorder(1,4,0,1)));
  moreList.setFont(resources.getRowFont());
  moreList.setForeground(resources.getRowColor());
  moreList.setOpaque(false);
  moreList.setRolloverEnabled(true);
  moreList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
  moreList.setHighlighters(new ColorHighlighter(HighlightPredicate.ROLLOVER_ROW,resources.getHighlightBackground(),resources.getHighlightForeground()));
  moreList.addMouseListener(new RolloverCursorListener());
  EventListModel<Object> listModel=new EventListModel<Object>(uniqueList);
  popupSelectionModel=new EventSelectionModel<Object>(uniqueList);
  moreList.setModel(listModel);
  moreList.setSelectionModel(popupSelectionModel);
  popupSelectionModel.addListSelectionListener(new SelectionListener(popupSelectionModel));
  scrollPane.setBorder(BorderFactory.createEmptyBorder());
  scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
  scrollPane.setViewportView(moreList);
  popupMenu.setBorder(BorderFactory.createEmptyBorder());
  popupMenu.setFocusable(false);
  popupMenu.addPopupMenuListener(new PopupMenuListener(){
    @Override public void popupMenuCanceled(    PopupMenuEvent e){
    }
    @Override public void popupMenuWillBecomeInvisible(    PopupMenuEvent e){
      if (popupTriggered) {
        popupReady=false;
      }
 else {
        popupReady=true;
      }
    }
    @Override public void popupMenuWillBecomeVisible(    PopupMenuEvent e){
      popupTriggered=true;
    }
  }
);
  add(titlePanel,BorderLayout.NORTH);
  add(scrollPane,BorderLayout.CENTER);
  titlePanel.add(titleLabel,BorderLayout.CENTER);
  titlePanel.add(closeButton,BorderLayout.EAST);
  popupMenu.add(this);
}