Program: 123783
Project: 123783
Buggy source:
/** 
 * DOC amaumont Comment method "createComponents".
 */
private void createComponents(){
  FormLayout formLayout=new FormLayout();
  formLayout.spacing=15;
  this.setLayout(formLayout);
  Button applyButton=new Button(this,SWT.NONE);
  applyButton.setEnabled(isReadOnly());
  applyButton.setText("String_Node_Str");
  FormData applyFormData=new FormData();
  applyFormData.width=100;
  applyButton.setLayoutData(applyFormData);
  applyButton.addSelectionListener(new SelectionListener(){
    public void widgetDefaultSelected(    SelectionEvent e){
    }
    public void widgetSelected(    SelectionEvent e){
      mapperUi.closeMapperDialog(SWT.APPLICATION_MODAL);
    }
  }
);
  statusBar=new StatusBar(this,SWT.NONE);
  final ProblemsAnalyser problemsAnalyser=mapperUi.getMapperManager().getProblemsAnalyser();
  if (!problemsAnalyser.getProblems().isEmpty()) {
    statusBar.setValues(STATUS.ERROR,problemsAnalyser.getErrorMessage());
  }
  Button okButton=new Button(this,SWT.NONE);
  okButton.setEnabled(isReadOnly());
  okButton.setText("String_Node_Str");
  FormData okFormData=new FormData();
  okFormData.width=100;
  okButton.setLayoutData(okFormData);
  okButton.addSelectionListener(new SelectionListener(){
    public void widgetDefaultSelected(    SelectionEvent e){
    }
    public void widgetSelected(    SelectionEvent e){
      mapperUi.closeMapperDialog(SWT.OK);
    }
  }
);
  Button cancelButton=new Button(this,SWT.NONE);
  cancelButton.setText("String_Node_Str");
  cancelButton.addSelectionListener(new SelectionListener(){
    public void widgetDefaultSelected(    SelectionEvent e){
    }
    public void widgetSelected(    SelectionEvent e){
      mapperUi.closeMapperDialog(SWT.CANCEL);
    }
  }
);
  FormData cancelFormData=new FormData();
  cancelFormData.width=100;
  cancelButton.setLayoutData(cancelFormData);
  cancelFormData.right=new FormAttachment(100,-5);
  okFormData.right=new FormAttachment(cancelButton,-5);
  applyFormData.right=new FormAttachment(okButton,-5);
}

Fixed version (ground truth):
/** 
 * DOC amaumont Comment method "createComponents".
 */
private void createComponents(){
  FormLayout formLayout=new FormLayout();
  formLayout.spacing=15;
  this.setLayout(formLayout);
  Button applyButton=new Button(this,SWT.NONE);
  applyButton.setEnabled(!mapperUi.getMapperComponent().isReadOnly());
  applyButton.setText("String_Node_Str");
  FormData applyFormData=new FormData();
  applyFormData.width=100;
  applyButton.setLayoutData(applyFormData);
  applyButton.addSelectionListener(new SelectionListener(){
    public void widgetDefaultSelected(    SelectionEvent e){
    }
    public void widgetSelected(    SelectionEvent e){
      mapperUi.closeMapperDialog(SWT.APPLICATION_MODAL);
    }
  }
);
  statusBar=new StatusBar(this,SWT.NONE);
  final ProblemsAnalyser problemsAnalyser=mapperUi.getMapperManager().getProblemsAnalyser();
  if (!problemsAnalyser.getProblems().isEmpty()) {
    statusBar.setValues(STATUS.ERROR,problemsAnalyser.getErrorMessage());
  }
  Button okButton=new Button(this,SWT.NONE);
  okButton.setEnabled(!mapperUi.getMapperComponent().isReadOnly());
  okButton.setText("String_Node_Str");
  FormData okFormData=new FormData();
  okFormData.width=100;
  okButton.setLayoutData(okFormData);
  okButton.addSelectionListener(new SelectionListener(){
    public void widgetDefaultSelected(    SelectionEvent e){
    }
    public void widgetSelected(    SelectionEvent e){
      mapperUi.closeMapperDialog(SWT.OK);
    }
  }
);
  Button cancelButton=new Button(this,SWT.NONE);
  cancelButton.setText("String_Node_Str");
  cancelButton.addSelectionListener(new SelectionListener(){
    public void widgetDefaultSelected(    SelectionEvent e){
    }
    public void widgetSelected(    SelectionEvent e){
      mapperUi.closeMapperDialog(SWT.CANCEL);
    }
  }
);
  FormData cancelFormData=new FormData();
  cancelFormData.width=100;
  cancelButton.setLayoutData(cancelFormData);
  cancelFormData.right=new FormAttachment(100,-5);
  okFormData.right=new FormAttachment(cancelButton,-5);
  applyFormData.right=new FormAttachment(okButton,-5);
}