Program: 21068
Project: 21068
Buggy source:
public void init(){
  if (JDFlags.hasAllFlags(flag,UserIO.DONT_SHOW_AGAIN)) {
    SubConfiguration cfg=SubConfiguration.getConfig(DIALOGS_CONFIG);
    Object value;
    if ((value=cfg.getProperty("String_Node_Str" + JDHash.getMD5(this.toString()))) != null) {
      if (value instanceof Integer) {
        int i=((Integer)value).intValue();
        this.returnValue=(i & (UserIO.RETURN_OK | UserIO.RETURN_CANCEL)) | UserIO.RETURN_DONT_SHOW_AGAIN | UserIO.RETURN_SKIPPED_BY_DONT_SHOW;
      }
      return;
    }
  }
  this.setModal(true);
  this.setLayout(new MigLayout("String_Node_Str","String_Node_Str","String_Node_Str"));
  this.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
  btnOK=new JButton(this.okOption);
  btnOK.addActionListener(this);
  btnCancel=new JButton(this.cancelOption);
  btnCancel.addActionListener(this);
  if (icon != null) {
    add(new JLabel(this.icon),"String_Node_Str");
  }
  contentpane=contentInit();
  add(contentpane,"String_Node_Str");
  add(this.countDownLabel,"String_Node_Str");
  if ((flag & UserIO.DONT_SHOW_AGAIN) > 0) {
    dont=new JCheckBox();
    dont.setHorizontalAlignment(JCheckBox.TRAILING);
    add(new JLabel(JDL.L("String_Node_Str","String_Node_Str")));
    add(dont,"String_Node_Str");
  }
  if ((flag & UserIO.NO_OK_OPTION) == 0) {
    getRootPane().setDefaultButton(btnOK);
    btnOK.requestFocusInWindow();
    add(btnOK,"String_Node_Str");
  }
  if ((flag & UserIO.NO_CANCEL_OPTION) == 0) {
    add(btnCancel,"String_Node_Str");
    if ((flag & UserIO.NO_OK_OPTION) != 0) {
      this.getRootPane().setDefaultButton(btnCancel);
      btnCancel.requestFocusInWindow();
    }
  }
  this.setMinimumSize(new Dimension(300,-1));
  if (JDFlags.hasNoFlags(flag,UserIO.NO_COUNTDOWN)) {
    this.countdown(UserIO.getCountdownTime());
  }
 else {
    countDownLabel.setVisible(false);
  }
  this.setAlwaysOnTop(true);
  this.invalidate();
  this.pack();
  this.setResizable(true);
  this.packed();
  this.toFront();
  this.setMinimumSize(this.getPreferredSize());
  if (DEFAULT_DIMENSION != null)   this.setSize(DEFAULT_DIMENSION);
  if (SwingGui.getInstance() == null) {
    this.setLocation(Screen.getCenterOfComponent(null,this));
  }
 else   if (SwingGui.getInstance().getMainFrame().getExtendedState() == JFrame.ICONIFIED || !SwingGui.getInstance().getMainFrame().isVisible()) {
    this.setLocation(Screen.getDockBottomRight(this));
  }
 else {
    this.setLocation(Screen.getCenterOfComponent(SwingGui.getInstance().getMainFrame(),this));
  }
  this.setVisible(true);
  this.pack();
}

Fixed version (ground truth):
public void init(){
  if (JDFlags.hasAllFlags(flag,UserIO.DONT_SHOW_AGAIN)) {
    SubConfiguration cfg=SubConfiguration.getConfig(DIALOGS_CONFIG);
    Object value;
    if ((value=cfg.getProperty("String_Node_Str" + JDHash.getMD5(this.toString()))) != null) {
      if (value instanceof Integer) {
        int i=((Integer)value).intValue();
        this.returnValue=(i & (UserIO.RETURN_OK | UserIO.RETURN_CANCEL)) | UserIO.RETURN_DONT_SHOW_AGAIN | UserIO.RETURN_SKIPPED_BY_DONT_SHOW;
      }
      return;
    }
  }
  this.setModal(true);
  this.setLayout(new MigLayout("String_Node_Str","String_Node_Str","String_Node_Str"));
  this.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
  btnOK=new JButton(this.okOption);
  JButton focus=btnOK;
  btnOK.addActionListener(this);
  btnCancel=new JButton(this.cancelOption);
  btnCancel.addActionListener(this);
  if (icon != null) {
    add(new JLabel(this.icon),"String_Node_Str");
  }
  contentpane=contentInit();
  add(contentpane,"String_Node_Str");
  add(this.countDownLabel,"String_Node_Str");
  if ((flag & UserIO.DONT_SHOW_AGAIN) > 0) {
    dont=new JCheckBox();
    dont.setHorizontalAlignment(JCheckBox.TRAILING);
    add(new JLabel(JDL.L("String_Node_Str","String_Node_Str")));
    add(dont,"String_Node_Str");
  }
  if ((flag & UserIO.NO_OK_OPTION) == 0) {
    getRootPane().setDefaultButton(btnOK);
    btnOK.addHierarchyListener(new HierarchyListener(){
      public void hierarchyChanged(      HierarchyEvent e){
        if ((e.getChangeFlags() & HierarchyEvent.PARENT_CHANGED) != 0) {
          JButton defaultButton=(JButton)e.getComponent();
          JRootPane root=SwingUtilities.getRootPane(defaultButton);
          if (root != null) {
            root.setDefaultButton(defaultButton);
          }
        }
      }
    }
);
    focus=btnOK;
    add(btnOK,"String_Node_Str");
  }
  if ((flag & UserIO.NO_CANCEL_OPTION) == 0) {
    add(btnCancel,"String_Node_Str");
    if ((flag & UserIO.NO_OK_OPTION) != 0) {
      this.getRootPane().setDefaultButton(btnCancel);
      btnCancel.requestFocusInWindow();
      focus=btnCancel;
    }
  }
  this.setMinimumSize(new Dimension(300,-1));
  if (JDFlags.hasNoFlags(flag,UserIO.NO_COUNTDOWN)) {
    this.countdown(UserIO.getCountdownTime());
  }
 else {
    countDownLabel.setVisible(false);
  }
  this.setAlwaysOnTop(true);
  this.invalidate();
  this.pack();
  this.setResizable(true);
  this.toFront();
  this.setMinimumSize(this.getPreferredSize());
  if (DEFAULT_DIMENSION != null)   this.setSize(DEFAULT_DIMENSION);
  if (SwingGui.getInstance() == null) {
    this.setLocation(Screen.getCenterOfComponent(null,this));
  }
 else   if (SwingGui.getInstance().getMainFrame().getExtendedState() == JFrame.ICONIFIED || !SwingGui.getInstance().getMainFrame().isVisible()) {
    this.setLocation(Screen.getDockBottomRight(this));
  }
 else {
    this.setLocation(Screen.getCenterOfComponent(SwingGui.getInstance().getMainFrame(),this));
  }
  KeyStroke ks=KeyStroke.getKeyStroke("String_Node_Str");
  focus.getInputMap().put(ks,"String_Node_Str");
  focus.getInputMap(JButton.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(ks,"String_Node_Str");
  focus.getInputMap(JButton.WHEN_IN_FOCUSED_WINDOW).put(ks,"String_Node_Str");
  focus.getActionMap().put("String_Node_Str",new AbstractAction(){
    public void actionPerformed(    ActionEvent e){
      dispose();
    }
  }
);
  focus.requestFocus();
  this.packed();
  this.setVisible(true);
}