Program: 68611
Project: 68611
Buggy source:
protected Component buildMainPanel(){
  GridBagConstraints constraints=new GridBagConstraints();
  JPanel mainPanel=new JPanel(new GridBagLayout());
  JLabel packageNameLabel=SwingComponentFactory.buildLabel("String_Node_Str",resourceRepository());
  constraints.gridx=0;
  constraints.gridy=0;
  constraints.gridwidth=1;
  constraints.gridheight=1;
  constraints.weightx=0;
  constraints.weighty=0;
  constraints.fill=GridBagConstraints.NONE;
  constraints.anchor=GridBagConstraints.LINE_START;
  constraints.insets=new Insets(0,0,0,0);
  mainPanel.add(packageNameLabel,constraints);
  this.packageNameTextField=new JTextField();
  this.packageNameTextField.setColumns(30);
  Document packageNameDocument=new RegexpDocument(RegexpDocument.RE_PACKAGE);
  packageNameDocument.addDocumentListener(this.buildPackageNameDocumentListener());
  this.packageNameTextField.setDocument(packageNameDocument);
  constraints.gridx=1;
  constraints.gridy=0;
  constraints.gridwidth=1;
  constraints.gridheight=1;
  constraints.weightx=1;
  constraints.weighty=0;
  constraints.fill=GridBagConstraints.HORIZONTAL;
  constraints.anchor=GridBagConstraints.CENTER;
  constraints.insets=new Insets(0,5,0,0);
  mainPanel.add(this.packageNameTextField,constraints);
  packageNameLabel.setLabelFor(this.packageNameTextField);
  Spacer spacer=new Spacer();
  constraints.gridx=0;
  constraints.gridy=3;
  constraints.gridwidth=1;
  constraints.gridheight=1;
  constraints.weightx=0;
  constraints.weighty=1;
  constraints.fill=GridBagConstraints.BOTH;
  constraints.anchor=GridBagConstraints.CENTER;
  constraints.insets=new Insets(0,0,0,0);
  mainPanel.add(spacer,constraints);
  return mainPanel;
}

Fixed version (ground truth):
protected Component buildMainPanel(){
  GridBagConstraints constraints=new GridBagConstraints();
  JPanel mainPanel=new JPanel(new GridBagLayout());
  JLabel packageNameLabel=SwingComponentFactory.buildLabel("String_Node_Str",resourceRepository());
  constraints.gridx=0;
  constraints.gridy=0;
  constraints.gridwidth=1;
  constraints.gridheight=1;
  constraints.weightx=0;
  constraints.weighty=0;
  constraints.fill=GridBagConstraints.NONE;
  constraints.anchor=GridBagConstraints.LINE_START;
  constraints.insets=new Insets(0,0,0,0);
  mainPanel.add(packageNameLabel,constraints);
  this.packageNameTextField=new JTextField();
  this.packageNameTextField.setColumns(30);
  Document packageNameDocument=new RegexpDocument(RegexpDocument.RE_PACKAGE);
  packageNameDocument.addDocumentListener(this.buildPackageNameDocumentListener());
  this.packageNameTextField.setDocument(packageNameDocument);
  constraints.gridx=1;
  constraints.gridy=0;
  constraints.gridwidth=1;
  constraints.gridheight=1;
  constraints.weightx=1;
  constraints.weighty=0;
  constraints.fill=GridBagConstraints.HORIZONTAL;
  constraints.anchor=GridBagConstraints.CENTER;
  constraints.insets=new Insets(0,5,0,0);
  mainPanel.add(this.packageNameTextField,constraints);
  packageNameLabel.setLabelFor(this.packageNameTextField);
  this.generateAccessorsCheckBox=new JCheckBox(resourceRepository().getString("String_Node_Str"),true);
  constraints.gridx=0;
  constraints.gridy=1;
  constraints.gridwidth=2;
  constraints.gridheight=1;
  constraints.weightx=0;
  constraints.weighty=0;
  constraints.fill=GridBagConstraints.NONE;
  constraints.anchor=GridBagConstraints.LINE_START;
  constraints.insets=new Insets(5,0,0,0);
  mainPanel.add(this.generateAccessorsCheckBox,constraints);
  Spacer spacer=new Spacer();
  constraints.gridx=0;
  constraints.gridy=3;
  constraints.gridwidth=1;
  constraints.gridheight=1;
  constraints.weightx=0;
  constraints.weighty=1;
  constraints.fill=GridBagConstraints.BOTH;
  constraints.anchor=GridBagConstraints.CENTER;
  constraints.insets=new Insets(0,0,0,0);
  mainPanel.add(spacer,constraints);
  return mainPanel;
}