Program: 103387
Project: 103387
Buggy source:
/** 
 * Initializes the dialog.
 */
private void init(){
  TransparentPanel labelsPanel=new TransparentPanel(new GridLayout(0,1,5,5));
  TransparentPanel fieldsPanel=new TransparentPanel(new GridLayout(0,1,5,5));
  labelsPanel.add(accountLabel);
  fieldsPanel.add(accountCombo);
  initAccountCombo();
  accountCombo.setRenderer(new AccountComboRenderer());
  labelsPanel.add(groupLabel);
  fieldsPanel.add(groupCombo);
  initGroupCombo();
  groupCombo.setRenderer(new GroupComboRenderer());
  labelsPanel.add(contactAddressLabel);
  fieldsPanel.add(contactAddressField);
  labelsPanel.add(displayNameLabel);
  fieldsPanel.add(displayNameField);
  contactAddressField.getDocument().addDocumentListener(new DocumentListener(){
    public void changedUpdate(    DocumentEvent e){
    }
    public void insertUpdate(    DocumentEvent e){
      updateAddButtonState();
    }
    public void removeUpdate(    DocumentEvent e){
      updateAddButtonState();
    }
  }
);
  TransparentPanel dataPanel=new TransparentPanel(new BorderLayout());
  dataPanel.add(labelsPanel,BorderLayout.WEST);
  dataPanel.add(fieldsPanel);
  TransparentPanel mainPanel=new TransparentPanel(new BorderLayout(20,20));
  mainPanel.setBorder(BorderFactory.createEmptyBorder(20,20,20,20));
  mainPanel.add(imageLabel,BorderLayout.WEST);
  mainPanel.add(dataPanel,BorderLayout.CENTER);
  this.getContentPane().add(mainPanel,BorderLayout.NORTH);
  this.getContentPane().add(createButtonsPanel(),BorderLayout.SOUTH);
  this.setPreferredSize(new Dimension(450,200));
  this.addWindowFocusListener(this);
  loadSkin();
}

Fixed version (ground truth):
/** 
 * Initializes the dialog.
 */
private void init(){
  TransparentPanel labelsPanel=new TransparentPanel(new GridLayout(0,1,5,5));
  TransparentPanel fieldsPanel=new TransparentPanel(new GridLayout(0,1,5,5));
  labelsPanel.add(accountLabel);
  fieldsPanel.add(accountCombo);
  initAccountCombo();
  accountCombo.setRenderer(new AccountComboRenderer());
  labelsPanel.add(groupLabel);
  fieldsPanel.add(groupCombo);
  initGroupCombo();
  groupCombo.setRenderer(new GroupComboRenderer());
  labelsPanel.add(contactAddressLabel);
  fieldsPanel.add(contactAddressField);
  labelsPanel.add(displayNameLabel);
  fieldsPanel.add(displayNameField);
  contactAddressField.getDocument().addDocumentListener(new DocumentListener(){
    public void changedUpdate(    DocumentEvent e){
    }
    public void insertUpdate(    DocumentEvent e){
      updateAddButtonState();
    }
    public void removeUpdate(    DocumentEvent e){
      updateAddButtonState();
    }
  }
);
  TransparentPanel dataPanel=new TransparentPanel(new BorderLayout());
  dataPanel.add(labelsPanel,BorderLayout.WEST);
  dataPanel.add(fieldsPanel);
  TransparentPanel mainPanel=new TransparentPanel(new BorderLayout(20,10));
  mainPanel.setBorder(BorderFactory.createEmptyBorder(20,20,20,20));
  mainPanel.add(imageLabel,BorderLayout.WEST);
  mainPanel.add(dataPanel,BorderLayout.CENTER);
  mainPanel.add(createButtonsPanel(),BorderLayout.SOUTH);
  this.getContentPane().add(mainPanel,BorderLayout.CENTER);
  this.setPreferredSize(new Dimension(450,250));
  this.setResizable(false);
  this.addWindowFocusListener(this);
  loadSkin();
}