Program: 35552
Project: 35552
Buggy source:
/** 
 * {@inheritDoc}
 */
@Override public void onBind(){
  customChoices=new HashSet<String>();
  disabledCustomChoices=new HashSet<String>();
  view.getTypeField().addListener(Events.Select,new Listener<BaseEvent>(){
    @Override public void handleEvent(    final BaseEvent be){
      final String code=view.getCodeField().getValue();
      final LogicalElementType type=TypeModel.getType(view.getTypeField().getValue());
      loadFlexibleElementSpecificFields(flexibleElement,type);
      if (type == ElementTypeEnum.FILES_LIST || type == ElementTypeEnum.REPORT || type == ElementTypeEnum.REPORT_LIST) {
        view.getExportableField().hide();
        view.getExportableField().clear();
      }
 else {
        view.getExportableField().show();
        view.getExportableField().setValue(flexibleElement != null ? flexibleElement.getExportable() : null);
      }
      view.getCodeField().setValue(code);
    }
  }
);
  view.getContainerField().addListener(Events.Select,new Listener<BaseEvent>(){
    @Override public void handleEvent(    final BaseEvent be){
      final BaseModelData hasLayout=view.getContainerField().getValue();
      final LayoutDTO selectedContainer=EditLayoutGroupAdminPresenter.getLayout(hasLayout);
      if (hasLayout instanceof ProjectBannerDTO || hasLayout instanceof OrgUnitBannerDTO) {
        view.getBannerField().setValue(true);
      }
      view.getLayoutGroupField().getStore().removeAll();
      view.getLayoutGroupField().disable();
      if (selectedContainer != null) {
        view.getLayoutGroupField().getStore().add(selectedContainer.getGroups());
        view.getLayoutGroupField().getStore().commitChanges();
        view.getLayoutGroupField().setValue(view.getLayoutGroupField().getStore().getAt(0));
        view.getLayoutGroupField().enable();
      }
    }
  }
);
  view.getBannerField().addListener(Events.Change,new Listener<BaseEvent>(){
    @Override public void handleEvent(    final BaseEvent be){
      final boolean checked=ClientUtils.isTrue(view.getBannerField().getValue());
      view.getBannerPositionField().setValue(null);
      view.getBannerPositionField().setEnabled(checked);
      view.getBannerPositionField().setAllowBlank(!checked);
    }
  }
);
  view.getCustomChoiceAddButton().addSelectionListener(new SelectionListener<ButtonEvent>(){
    @Override public void componentSelected(    final ButtonEvent ce){
      onAddCustomChoice(view.getCustomChoiceField().getValue());
    }
  }
);
  view.getCategoryTypeField().addListener(Events.Select,new Listener<FieldEvent>(){
    @Override public void handleEvent(    final FieldEvent event){
      final CategoryTypeDTO value=view.getCategoryTypeField().getValue();
      view.setCustomChoiceAddFieldEnabled(value == null || DEFAULT_CATEGORY_TYPE.equals(value));
    }
  }
);
  view.getAnchorAddSubField().addClickHandler(new ClickHandler(){
    @Override public void onClick(    ClickEvent event){
      if (flexibleElement instanceof BudgetElementDTO) {
        BudgetElementDTO budgetElementDTO=(BudgetElementDTO)flexibleElement;
        BudgetSubFieldDTO budgetSubFieldDTO=new BudgetSubFieldDTO();
        budgetElementDTO.getBudgetSubFields().add(budgetSubFieldDTO);
        eventBus.navigateRequest(Page.ADMIN_EDIT_FLEXIBLE_ELEMENT_ADD_BUDGETSUBFIELD.request().addData(RequestParameter.DTO,budgetSubFieldDTO));
      }
    }
  }
);
  view.getSaveButton().addSelectionListener(new SelectionListener<ButtonEvent>(){
    @Override public void componentSelected(    final ButtonEvent ce){
      onSaveAction();
    }
  }
);
  registerHandler(eventBus.addHandler(UpdateEvent.getType(),new UpdateHandler(){
    @Override public void onUpdate(    final UpdateEvent event){
      if (event.concern(UpdateEvent.EDIT_FLEXIBLEELEMNT_EDIT_BUDGETSUBFIELD)) {
        loadFlexibleElement(flexibleElement);
      }
    }
  }
));
  view.getFormulaField().setValidator(new Validator(){
    @Override public String validate(    Field<?> field,    String value){
      if (value == null || value.trim().isEmpty()) {
        return null;
      }
      final Computation computation=Computations.parse(value,otherElements);
      if (computation != null && !computation.isBadFormula()) {
        final Set<String> badReferences=computation.getBadReferences();
        if (!badReferences.isEmpty()) {
          final String references=Collections.join(customChoices,"String_Node_Str");
          if (computation.getBadReferences().size() == 1) {
            return I18N.MESSAGES.adminFlexibleComputationRuleBadReference(references);
          }
 else {
            return I18N.MESSAGES.adminFlexibleComputationRuleBadReferences(references);
          }
        }
      }
 else {
        return I18N.CONSTANTS.adminFlexibleComputationRuleBadFormula();
      }
      return null;
    }
  }
);
  view.setGridEventHandler(new HasGrid.GridEventHandler<FlexibleElementDTO>(){
    @Override public void onRowClickEvent(    final FlexibleElementDTO rowElement){
      MessageBox.prompt(I18N.CONSTANTS.adminFlexibleCode(),I18N.MESSAGES.adminFlexibleEditCode(rowElement.getFormattedLabel()),false,new Listener<MessageBoxEvent>(){
        @Override public void handleEvent(        MessageBoxEvent be){
          if (Dialog.OK.equals(be.getButtonClicked().getItemId())) {
            final String code=be.getValue();
            onRenameCodeAction(rowElement,code);
          }
        }
      }
);
    }
  }
);
}

Fixed version (ground truth):
/** 
 * {@inheritDoc}
 */
@Override public void onBind(){
  customChoices=new HashSet<String>();
  disabledCustomChoices=new HashSet<String>();
  view.getTypeField().addListener(Events.Select,new Listener<BaseEvent>(){
    @Override public void handleEvent(    final BaseEvent be){
      final String code=view.getCodeField().getValue();
      final LogicalElementType type=TypeModel.getType(view.getTypeField().getValue());
      loadFlexibleElementSpecificFields(flexibleElement,type);
      if (type == ElementTypeEnum.FILES_LIST || type == ElementTypeEnum.REPORT || type == ElementTypeEnum.REPORT_LIST) {
        view.getExportableField().hide();
        view.getExportableField().clear();
      }
 else {
        view.getExportableField().show();
        view.getExportableField().setValue(flexibleElement != null ? flexibleElement.getExportable() : null);
      }
      view.getCodeField().setValue(code);
    }
  }
);
  view.getContainerField().addListener(Events.Select,new Listener<BaseEvent>(){
    @Override public void handleEvent(    final BaseEvent be){
      final BaseModelData hasLayout=view.getContainerField().getValue();
      final LayoutDTO selectedContainer=EditLayoutGroupAdminPresenter.getLayout(hasLayout);
      if (hasLayout instanceof ProjectBannerDTO || hasLayout instanceof OrgUnitBannerDTO) {
        view.getBannerField().setValue(true);
      }
      view.getLayoutGroupField().getStore().removeAll();
      view.getLayoutGroupField().disable();
      if (selectedContainer != null) {
        view.getLayoutGroupField().getStore().add(selectedContainer.getGroups());
        view.getLayoutGroupField().getStore().commitChanges();
        view.getLayoutGroupField().setValue(view.getLayoutGroupField().getStore().getAt(0));
        view.getLayoutGroupField().enable();
      }
    }
  }
);
  view.getBannerField().addListener(Events.Change,new Listener<BaseEvent>(){
    @Override public void handleEvent(    final BaseEvent be){
      final boolean checked=ClientUtils.isTrue(view.getBannerField().getValue());
      view.getBannerPositionField().setValue(null);
      view.getBannerPositionField().setEnabled(checked);
      view.getBannerPositionField().setAllowBlank(!checked);
    }
  }
);
  view.getCustomChoiceAddButton().addSelectionListener(new SelectionListener<ButtonEvent>(){
    @Override public void componentSelected(    final ButtonEvent ce){
      onAddCustomChoice(view.getCustomChoiceField().getValue());
    }
  }
);
  view.getCategoryTypeField().addListener(Events.Select,new Listener<FieldEvent>(){
    @Override public void handleEvent(    final FieldEvent event){
      final CategoryTypeDTO value=view.getCategoryTypeField().getValue();
      view.setCustomChoiceAddFieldEnabled(value == null || DEFAULT_CATEGORY_TYPE.equals(value));
    }
  }
);
  view.getAnchorAddSubField().addClickHandler(new ClickHandler(){
    @Override public void onClick(    ClickEvent event){
      if (flexibleElement instanceof BudgetElementDTO) {
        BudgetElementDTO budgetElementDTO=(BudgetElementDTO)flexibleElement;
        BudgetSubFieldDTO budgetSubFieldDTO=new BudgetSubFieldDTO();
        budgetElementDTO.getBudgetSubFields().add(budgetSubFieldDTO);
        eventBus.navigateRequest(Page.ADMIN_EDIT_FLEXIBLE_ELEMENT_ADD_BUDGETSUBFIELD.request().addData(RequestParameter.DTO,budgetSubFieldDTO));
      }
    }
  }
);
  view.getSaveButton().addSelectionListener(new SelectionListener<ButtonEvent>(){
    @Override public void componentSelected(    final ButtonEvent ce){
      onSaveAction();
    }
  }
);
  registerHandler(eventBus.addHandler(UpdateEvent.getType(),new UpdateHandler(){
    @Override public void onUpdate(    final UpdateEvent event){
      if (event.concern(UpdateEvent.EDIT_FLEXIBLEELEMNT_EDIT_BUDGETSUBFIELD)) {
        loadFlexibleElement(flexibleElement);
      }
    }
  }
));
  view.getFormulaField().setValidator(new Validator(){
    @Override public String validate(    Field<?> field,    String value){
      if (value == null || value.trim().isEmpty()) {
        return null;
      }
      final Computation computation=Computations.parse(value,otherElements);
      if (computation != null && !computation.isBadFormula()) {
        final Set<String> badReferences=computation.getBadReferences();
        if (!badReferences.isEmpty()) {
          final String references=Collections.join(badReferences,"String_Node_Str");
          if (computation.getBadReferences().size() == 1) {
            return I18N.MESSAGES.adminFlexibleComputationRuleBadReference(references);
          }
 else {
            return I18N.MESSAGES.adminFlexibleComputationRuleBadReferences(references);
          }
        }
      }
 else {
        return I18N.CONSTANTS.adminFlexibleComputationRuleBadFormula();
      }
      return null;
    }
  }
);
  view.setGridEventHandler(new HasGrid.GridEventHandler<FlexibleElementDTO>(){
    @Override public void onRowClickEvent(    final FlexibleElementDTO rowElement){
      MessageBox.prompt(I18N.CONSTANTS.adminFlexibleCode(),I18N.MESSAGES.adminFlexibleEditCode(rowElement.getFormattedLabel()),false,new Listener<MessageBoxEvent>(){
        @Override public void handleEvent(        MessageBoxEvent be){
          if (Dialog.OK.equals(be.getButtonClicked().getItemId())) {
            final String code=be.getValue();
            onRenameCodeAction(rowElement,code);
          }
        }
      }
);
    }
  }
);
}