Program: 68426
Project: 68426
Buggy source:
protected Component buildPage(){
  GridBagConstraints constraints=new GridBagConstraints();
  JPanel page=new JPanel(new GridBagLayout());
  page.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
  JComponent schemaSourceWidgets=this.buildSchemaSourcePanel();
  constraints.gridx=0;
  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(0,0,0,0);
  page.add(schemaSourceWidgets,constraints);
  addHelpTopicId(schemaSourceWidgets,"String_Node_Str");
  JComponent schemaNamespacesWidgets=this.buildSchemaNamespacesPanel();
  constraints.gridx=0;
  constraints.gridy=1;
  constraints.gridwidth=1;
  constraints.gridheight=1;
  constraints.weightx=1;
  constraints.weighty=1;
  constraints.fill=GridBagConstraints.HORIZONTAL;
  constraints.anchor=GridBagConstraints.PAGE_START;
  constraints.insets=new Insets(5,0,0,0);
  page.add(schemaNamespacesWidgets,constraints);
  addHelpTopicId(schemaNamespacesWidgets,"String_Node_Str");
  addHelpTopicId(page,"String_Node_Str");
  return page;
}

Fixed version (ground truth):
protected Component buildPage(){
  GridBagConstraints constraints=new GridBagConstraints();
  JPanel page=new JPanel(new GridBagLayout());
  page.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
  JComponent schemaSourceWidgets=this.buildSchemaSourcePanel();
  constraints.gridx=0;
  constraints.gridy=0;
  constraints.gridwidth=2;
  constraints.gridheight=1;
  constraints.weightx=1;
  constraints.weighty=0;
  constraints.fill=GridBagConstraints.HORIZONTAL;
  constraints.anchor=GridBagConstraints.CENTER;
  constraints.insets=new Insets(0,0,0,0);
  page.add(schemaSourceWidgets,constraints);
  addHelpTopicId(schemaSourceWidgets,"String_Node_Str");
  JCheckBox defaultNamespaceCheckBox=buildCheckBox("String_Node_Str",buildDefaultNamespaceCheckBoxAdapter());
  constraints.gridx=0;
  constraints.gridy=1;
  constraints.gridwidth=1;
  constraints.gridheight=1;
  constraints.weightx=1;
  constraints.weighty=0;
  constraints.fill=GridBagConstraints.HORIZONTAL;
  constraints.anchor=GridBagConstraints.PAGE_START;
  constraints.insets=new Insets(5,0,0,0);
  page.add(defaultNamespaceCheckBox,constraints);
  addAlignLeft(defaultNamespaceCheckBox);
  JTextField defaultNamespaceUrlTextField=new JTextField();
  defaultNamespaceUrlTextField.setDocument(buildDefaultNamspaceUrlDocument(buildDefaultNamespaceUrlHolder()));
  defaultNamespaceUrlTextField.setEnabled(defaultNamespaceCheckBox.isSelected());
  constraints.gridx=1;
  constraints.gridy=1;
  constraints.gridwidth=1;
  constraints.gridheight=1;
  constraints.weightx=1;
  constraints.weighty=0;
  constraints.fill=GridBagConstraints.HORIZONTAL;
  constraints.anchor=GridBagConstraints.PAGE_START;
  constraints.insets=new Insets(5,5,0,0);
  page.add(defaultNamespaceUrlTextField,constraints);
  addAlignRight(defaultNamespaceUrlTextField);
  defaultNamespaceCheckBox.addItemListener(buildDefaultNamspaceUrlEnabler(defaultNamespaceUrlTextField));
  JComponent schemaNamespacesWidgets=this.buildSchemaNamespacesPanel();
  constraints.gridx=0;
  constraints.gridy=2;
  constraints.gridwidth=2;
  constraints.gridheight=1;
  constraints.weightx=1;
  constraints.weighty=1;
  constraints.fill=GridBagConstraints.HORIZONTAL;
  constraints.anchor=GridBagConstraints.PAGE_START;
  constraints.insets=new Insets(5,0,0,0);
  page.add(schemaNamespacesWidgets,constraints);
  addHelpTopicId(schemaNamespacesWidgets,"String_Node_Str");
  addHelpTopicId(page,"String_Node_Str");
  return page;
}