Program: 190145
Project: 190145
Buggy source:
public void setup(){
  VizModel vizModel=VizController.getInstance().getVizModel();
  vizModel.addPropertyChangeListener(new PropertyChangeListener(){
    public void propertyChange(    PropertyChangeEvent evt){
      if (evt.getPropertyName().equals("String_Node_Str")) {
        refreshSharedConfig();
        refreshZoom();
      }
 else       if (evt.getPropertyName().equals("String_Node_Str")) {
        refreshSharedConfig();
      }
 else       if (evt.getPropertyName().equals("String_Node_Str")) {
        refreshSharedConfig();
      }
 else       if (evt.getPropertyName().equals("String_Node_Str")) {
        refreshSharedConfig();
      }
 else       if (evt.getPropertyName().equals("String_Node_Str")) {
        refreshSharedConfig();
      }
 else       if (evt.getPropertyName().equals("String_Node_Str")) {
        refreshZoom();
      }
    }
  }
);
  refreshSharedConfig();
  hightlightCheckBox.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent e){
      VizModel vizModel=VizController.getInstance().getVizModel();
      vizModel.setLightenNonSelectedAuto(hightlightCheckBox.isSelected());
    }
  }
);
  ((JColorButton)backgroundColorButton).addPropertyChangeListener(JColorButton.EVENT_COLOR,new PropertyChangeListener(){
    public void propertyChange(    PropertyChangeEvent evt){
      VizModel vizModel=VizController.getInstance().getVizModel();
      vizModel.setBackgroundColor(((JColorButton)backgroundColorButton).getColor());
    }
  }
);
  autoSelectNeigborCheckbox.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent e){
      VizModel vizModel=VizController.getInstance().getVizModel();
      vizModel.setAutoSelectNeighbor(autoSelectNeigborCheckbox.isSelected());
    }
  }
);
  zoomSlider.addChangeListener(new ChangeListener(){
    public void stateChanged(    ChangeEvent e){
      int cam=(int)VizController.getInstance().getVizModel().getCameraDistance();
      if (zoomSlider.getValue() != cam && cam < zoomSlider.getMaximum()) {
        GraphIO io=VizController.getInstance().getGraphIO();
        io.setCameraDistance(zoomSlider.getValue());
      }
    }
  }
);
}

Fixed version (ground truth):
public void setup(){
  VizModel vizModel=VizController.getInstance().getVizModel();
  vizModel.addPropertyChangeListener(new PropertyChangeListener(){
    public void propertyChange(    PropertyChangeEvent evt){
      if (evt.getPropertyName().equals("String_Node_Str")) {
        refreshSharedConfig();
      }
 else       if (evt.getPropertyName().equals("String_Node_Str")) {
        refreshSharedConfig();
      }
 else       if (evt.getPropertyName().equals("String_Node_Str")) {
        refreshSharedConfig();
      }
 else       if (evt.getPropertyName().equals("String_Node_Str")) {
        refreshSharedConfig();
      }
 else       if (evt.getPropertyName().equals("String_Node_Str")) {
        refreshSharedConfig();
      }
    }
  }
);
  refreshSharedConfig();
  hightlightCheckBox.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent e){
      VizModel vizModel=VizController.getInstance().getVizModel();
      vizModel.setLightenNonSelectedAuto(hightlightCheckBox.isSelected());
    }
  }
);
  ((JColorButton)backgroundColorButton).addPropertyChangeListener(JColorButton.EVENT_COLOR,new PropertyChangeListener(){
    public void propertyChange(    PropertyChangeEvent evt){
      VizModel vizModel=VizController.getInstance().getVizModel();
      vizModel.setBackgroundColor(((JColorButton)backgroundColorButton).getColor());
    }
  }
);
  autoSelectNeigborCheckbox.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent e){
      VizModel vizModel=VizController.getInstance().getVizModel();
      vizModel.setAutoSelectNeighbor(autoSelectNeigborCheckbox.isSelected());
    }
  }
);
  zoomSlider.addChangeListener(new ChangeListener(){
    public void stateChanged(    ChangeEvent e){
      int cam=(int)VizController.getInstance().getVizModel().getCameraDistance();
      if (zoomSlider.getValue() != cam && cam < zoomSlider.getMaximum()) {
        GraphIO io=VizController.getInstance().getGraphIO();
        io.setCameraDistance(zoomSlider.getValue());
      }
    }
  }
);
}