Program: 120595
Project: 120595
Buggy source:
private void fastRepositoryUpdateProperty(){
  IElementParameter param=elem.getElementParameterFromField(EParameterFieldType.PROPERTY_TYPE,dynamicProperty.getSection());
  if (param == null) {
    return;
  }
  param=param.getChildParameters().get(EParameterName.REPOSITORY_PROPERTY_TYPE.getName());
  if (param != null && param.getValue() != null) {
    IProxyRepositoryFactory factory=DesignerPlugin.getDefault().getProxyRepositoryFactory();
    String linkedRepository=(String)param.getValue();
    Item item;
    String displayName="String_Node_Str";
    try {
      IRepositoryViewObject object=factory.getLastVersion(linkedRepository.split("String_Node_Str")[0]);
      if (object == null) {
        return;
      }
      item=object.getProperty().getItem();
      IESBService service=null;
      if (GlobalServiceRegister.getDefault().isServiceRegistered(IESBService.class)) {
        service=(IESBService)GlobalServiceRegister.getDefault().getService(IESBService.class);
      }
      if (service != null && ERepositoryObjectType.getItemType(item) == service.getServicesType()) {
        lastItemUsed=(ConnectionItem)item;
        displayName="String_Node_Str" + service.getServiceLabel(item,linkedRepository);
      }
 else       if (item instanceof ConnectionItem) {
        lastItemUsed=(ConnectionItem)item;
        displayName=dynamicProperty.getRepositoryAliasName(lastItemUsed) + "String_Node_Str" + lastItemUsed.getProperty().getLabel();
      }
      if (item instanceof FileItem) {
        lastFileItemUsed=(FileItem)item;
        if (lastFileItemUsed instanceof RulesItem) {
          displayName="String_Node_Str" + lastFileItemUsed.getProperty().getLabel();
        }
      }
      if (item instanceof LinkRulesItem) {
        lastLinkItem=(LinkRulesItem)item;
        displayName="String_Node_Str" + lastLinkItem.getProperty().getLabel();
      }
    }
 catch (    PersistenceException e) {
      ExceptionHandler.process(e);
    }
    param.setListItemsDisplayName(new String[]{displayName});
    param.setListItemsValue(new String[]{(String)param.getValue()});
  }
}

Fixed version (ground truth):
private void fastRepositoryUpdateProperty(){
  IElementParameter param=elem.getElementParameterFromField(EParameterFieldType.PROPERTY_TYPE,dynamicProperty.getSection());
  if (param == null) {
    return;
  }
  param=param.getChildParameters().get(EParameterName.REPOSITORY_PROPERTY_TYPE.getName());
  if (param != null && param.getValue() != null) {
    IProxyRepositoryFactory factory=DesignerPlugin.getDefault().getProxyRepositoryFactory();
    String linkedRepository=(String)param.getValue();
    Item item;
    String displayName="String_Node_Str";
    try {
      IRepositoryViewObject object=factory.getLastVersion(linkedRepository.split("String_Node_Str")[0]);
      if (object == null) {
        return;
      }
      item=object.getProperty().getItem();
      IESBService service=null;
      if (GlobalServiceRegister.getDefault().isServiceRegistered(IESBService.class)) {
        service=(IESBService)GlobalServiceRegister.getDefault().getService(IESBService.class);
      }
      if (service != null && ERepositoryObjectType.getItemType(item) == service.getServicesType()) {
        lastItemUsed=(ConnectionItem)item;
        displayName="String_Node_Str" + service.getServiceLabel(item,linkedRepository);
      }
 else       if (item instanceof ConnectionItem) {
        lastItemUsed=(ConnectionItem)item;
        displayName=dynamicProperty.getRepositoryAliasName(lastItemUsed) + "String_Node_Str" + lastItemUsed.getProperty().getLabel();
      }
      if (item instanceof FileItem) {
        lastFileItemUsed=(FileItem)item;
        if (lastFileItemUsed instanceof RulesItem) {
          displayName="String_Node_Str" + lastFileItemUsed.getProperty().getLabel();
        }
 else {
          if (GlobalServiceRegister.getDefault().isServiceRegistered(ITransformService.class)) {
            ITransformService tService=(ITransformService)GlobalServiceRegister.getDefault().getService(ITransformService.class);
            if (tService.isTransformItem(item)) {
              displayName=tService.getDisplayName(item);
            }
          }
        }
      }
      if (item instanceof LinkRulesItem) {
        lastLinkItem=(LinkRulesItem)item;
        displayName="String_Node_Str" + lastLinkItem.getProperty().getLabel();
      }
    }
 catch (    PersistenceException e) {
      ExceptionHandler.process(e);
    }
    param.setListItemsDisplayName(new String[]{displayName});
    param.setListItemsValue(new String[]{(String)param.getValue()});
  }
}