Program: 92822
Project: 92822
Buggy source:
public void createControl(Composite parent){
  Composite client=new Composite(parent,SWT.NONE);
  client.setLayoutData(new GridData(GridData.FILL_BOTH));
  GridLayout layout=new GridLayout(3,false);
  layout.marginHeight=0;
  layout.marginWidth=0;
  client.setLayout(layout);
  Label label=new Label(client,SWT.NONE);
  label.setText(Messages.TraceLibraryPath_label);
  traceLibraryPath=new Text(client,SWT.BORDER);
  traceLibraryPath.setLayoutData(new GridData(SWT.FILL,SWT.CENTER,true,false));
  traceLibraryPath.addModifyListener(new ModifyListener(){
    @Override public void modifyText(    ModifyEvent e){
      boolean valid=validatePage();
      setPageComplete(valid);
    }
  }
);
  browsePathButton=new Button(client,SWT.PUSH);
  browsePathButton.setLayoutData(new GridData(SWT.END,SWT.CENTER,false,false));
  browsePathButton.setText(Messages.TraceLibraryPath_browseBtn);
  browsePathButton.addSelectionListener(new SelectionAdapter(){
    @Override public void widgetSelected(    SelectionEvent e){
      String dir=new DirectoryDialog(Display.getDefault().getActiveShell()).open();
      if (dir != null) {
        traceLibraryPath.setText(dir);
      }
    }
  }
);
  Label noteBoldLabel=new Label(client,SWT.BOLD);
  noteBoldLabel.setText(Messages.TraceLibraryPath_Note);
  noteBoldLabel.setLayoutData(new GridData(SWT.RIGHT,SWT.TOP,false,false));
  Font font=noteBoldLabel.getFont();
  if (font.getFontData().length > 0)   noteBoldLabel.setFont(new Font(client.getDisplay(),font.getFontData()[0].getName(),font.getFontData()[0].getHeight(),SWT.BOLD));
  Label noteTextLabel=new Label(client,SWT.WRAP);
  noteTextLabel.setText(Messages.TraceLibraryPath_Message);
  GridData gd=new GridData(SWT.FILL,SWT.CENTER,true,false);
  gd.widthHint=400;
  gd.horizontalSpan=2;
  noteTextLabel.setLayoutData(gd);
  setControl(client);
}

Fixed version (ground truth):
public void createControl(Composite parent){
  Composite client=new Composite(parent,SWT.NONE);
  client.setLayoutData(new GridData(GridData.FILL_BOTH));
  GridLayout layout=new GridLayout(3,false);
  layout.marginHeight=0;
  layout.marginWidth=0;
  client.setLayout(layout);
  Label label=new Label(client,SWT.NONE);
  label.setText(Messages.TraceLibraryPath_label);
  traceLibraryPath=new Text(client,SWT.BORDER);
  traceLibraryPath.setLayoutData(new GridData(SWT.FILL,SWT.CENTER,true,false));
  traceLibraryPath.addModifyListener(new ModifyListener(){
    @Override public void modifyText(    ModifyEvent e){
      boolean valid=validatePage();
      setPageComplete(valid);
    }
  }
);
  browsePathButton=new Button(client,SWT.PUSH);
  browsePathButton.setLayoutData(new GridData(SWT.END,SWT.CENTER,false,false));
  browsePathButton.setText(Messages.TraceLibraryPath_browseBtn);
  browsePathButton.addSelectionListener(new SelectionAdapter(){
    @Override public void widgetSelected(    SelectionEvent e){
      String dir=new DirectoryDialog(Display.getDefault().getActiveShell()).open();
      if (dir != null) {
        traceLibraryPath.setText(dir);
      }
    }
  }
);
  Label noLabel=new Label(client,SWT.NONE);
  noLabel.setLayoutData(new GridData(SWT.RIGHT,SWT.TOP,false,false));
  Label descTextLabel=new Label(client,SWT.WRAP);
  descTextLabel.setText(Messages.TraceLibraryPathWizard_Message);
  GridData gd=new GridData(SWT.FILL,SWT.CENTER,true,false);
  gd.widthHint=400;
  gd.horizontalSpan=2;
  descTextLabel.setLayoutData(gd);
  Label noteBoldLabel=new Label(client,SWT.BOLD);
  noteBoldLabel.setText(Messages.TraceLibraryPath_Note);
  noteBoldLabel.setLayoutData(new GridData(SWT.RIGHT,SWT.TOP,false,false));
  Font font=noteBoldLabel.getFont();
  if (font.getFontData().length > 0)   noteBoldLabel.setFont(new Font(client.getDisplay(),font.getFontData()[0].getName(),font.getFontData()[0].getHeight(),SWT.BOLD));
  Label noteTextLabel=new Label(client,SWT.WRAP);
  noteTextLabel.setText(Messages.TraceLibraryPath_Message);
  gd=new GridData(SWT.FILL,SWT.CENTER,true,false);
  gd.widthHint=400;
  gd.horizontalSpan=2;
  noteTextLabel.setLayoutData(gd);
  setControl(client);
}