Program: 62422
Project: 62422
Buggy source:
private JPanel createHeaderPanel(){
  final JPanel headerBar=new JPanel();
  headerBar.setLayout(new GridBagLayout());
  final GridBagConstraints gbc=new GridBagConstraints();
  gbc.fill=GridBagConstraints.HORIZONTAL;
  gbc.anchor=GridBagConstraints.NORTHWEST;
  updateButton=DialogUtils.createButton("String_Node_Str",RESCAN,updateIcon,headerBar,DialogUtils.ButtonStyle.Icon);
  updateButton.setActionCommand(LabelBarProgressMonitor.updateCommand);
  updateButton.addActionListener(new ActionListener(){
    public void actionPerformed(    final ActionEvent e){
      if (e.getActionCommand().equals("String_Node_Str")) {
        updateButton.setEnabled(false);
        mainPanel.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
        if (progMon != null) {
          progMon.setCanceled(true);
        }
      }
 else {
        final RescanOptions dlg=new RescanOptions();
        dlg.show();
        if (dlg.IsOK()) {
          DBScanner.Options options=new DBScanner.Options(dlg.shouldDoRecusive(),dlg.shouldValidateZips(),dlg.shouldDoQuicklooks());
          rescanFolder(options);
        }
      }
    }
  }
);
  headerBar.add(updateButton,gbc);
  headerBar.add(new JLabel("String_Node_Str"));
  gbc.weightx=99;
  repositoryListCombo=new JComboBox<>();
  repositoryListCombo.setRenderer(new ComboCellRenderer());
  repositoryListCombo.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent event){
      if (event.getStateChange() == ItemEvent.SELECTED) {
        final RepositoryInterface repo=(RepositoryInterface)repositoryListCombo.getSelectedItem();
        dbPane.setRepository(repo);
        SystemUtils.LOG.info("String_Node_Str" + repo.getName());
      }
    }
  }
);
  headerBar.add(repositoryListCombo,gbc);
  gbc.weightx=0;
  searchButton=DialogUtils.createButton("String_Node_Str","String_Node_Str",searchIcon,headerBar,DialogUtils.ButtonStyle.Icon);
  searchButton.setActionCommand(LabelBarProgressMonitor.updateCommand);
  searchButton.addActionListener(new ActionListener(){
    public void actionPerformed(    ActionEvent e){
      search();
    }
  }
);
  headerBar.add(searchButton,gbc);
  addButton=DialogUtils.createButton("String_Node_Str","String_Node_Str",addButtonIcon,headerBar,DialogUtils.ButtonStyle.Icon);
  addButton.addActionListener(new ActionListener(){
    public void actionPerformed(    final ActionEvent e){
      addRepository();
    }
  }
);
  headerBar.add(addButton,gbc);
  removeButton=DialogUtils.createButton("String_Node_Str","String_Node_Str",removeButtonIcon,headerBar,DialogUtils.ButtonStyle.Icon);
  removeButton.addActionListener(new ActionListener(){
    public void actionPerformed(    final ActionEvent e){
      removeRepository();
    }
  }
);
  headerBar.add(removeButton,gbc);
  final JButton helpButton=DialogUtils.createButton("String_Node_Str","String_Node_Str",helpIcon,headerBar,DialogUtils.ButtonStyle.Icon);
  HelpCtx.setHelpIDString(helpButton,helpId);
  helpButton.addActionListener(e -> new HelpCtx(helpId).display());
  headerBar.add(helpButton,gbc);
  return headerBar;
}

Fixed version (ground truth):
private JPanel createHeaderPanel(){
  final JPanel headerBar=new JPanel();
  headerBar.setLayout(new GridBagLayout());
  final GridBagConstraints gbc=new GridBagConstraints();
  gbc.fill=GridBagConstraints.HORIZONTAL;
  gbc.anchor=GridBagConstraints.NORTHWEST;
  updateButton=DialogUtils.createButton("String_Node_Str",RESCAN,updateIcon,headerBar,DialogUtils.ButtonStyle.Icon);
  updateButton.setActionCommand(LabelBarProgressMonitor.updateCommand);
  updateButton.addActionListener(new ActionListener(){
    public void actionPerformed(    final ActionEvent e){
      if (e.getActionCommand().equals("String_Node_Str")) {
        updateButton.setEnabled(false);
        mainPanel.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
        if (progMon != null) {
          progMon.setCanceled(true);
        }
      }
 else {
        final RescanOptions dlg=new RescanOptions();
        dlg.show();
        if (dlg.IsOK()) {
          DBScanner.Options options=new DBScanner.Options(dlg.shouldDoRecusive(),dlg.shouldValidateZips(),dlg.shouldDoQuicklooks());
          rescanFolder(options);
        }
      }
    }
  }
);
  headerBar.add(updateButton,gbc);
  headerBar.add(new JLabel("String_Node_Str"));
  gbc.weightx=99;
  repositoryListCombo=new JComboBox<>();
  repositoryListCombo.setRenderer(new ComboCellRenderer());
  repositoryListCombo.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent event){
      if (event.getStateChange() == ItemEvent.SELECTED) {
        final RepositoryInterface repo=(RepositoryInterface)repositoryListCombo.getSelectedItem();
        dbPane.setRepository(repo);
        SystemUtils.LOG.info("String_Node_Str" + repo.getName());
        searchButton.setEnabled(repo.getName().toLowerCase().contains("String_Node_Str"));
      }
    }
  }
);
  headerBar.add(repositoryListCombo,gbc);
  gbc.weightx=0;
  searchButton=DialogUtils.createButton("String_Node_Str","String_Node_Str",searchIcon,headerBar,DialogUtils.ButtonStyle.Icon);
  searchButton.setActionCommand(LabelBarProgressMonitor.updateCommand);
  searchButton.addActionListener(new ActionListener(){
    public void actionPerformed(    ActionEvent e){
      search();
    }
  }
);
  headerBar.add(searchButton,gbc);
  addButton=DialogUtils.createButton("String_Node_Str","String_Node_Str",addButtonIcon,headerBar,DialogUtils.ButtonStyle.Icon);
  addButton.addActionListener(new ActionListener(){
    public void actionPerformed(    final ActionEvent e){
      addRepository();
    }
  }
);
  headerBar.add(addButton,gbc);
  removeButton=DialogUtils.createButton("String_Node_Str","String_Node_Str",removeButtonIcon,headerBar,DialogUtils.ButtonStyle.Icon);
  removeButton.addActionListener(new ActionListener(){
    public void actionPerformed(    final ActionEvent e){
      removeRepository();
    }
  }
);
  headerBar.add(removeButton,gbc);
  final JButton helpButton=DialogUtils.createButton("String_Node_Str","String_Node_Str",helpIcon,headerBar,DialogUtils.ButtonStyle.Icon);
  HelpCtx.setHelpIDString(helpButton,helpId);
  helpButton.addActionListener(e -> new HelpCtx(helpId).display());
  headerBar.add(helpButton,gbc);
  return headerBar;
}