Program: 91747
Project: 91747
Buggy source:
@Override public Map<String,String> getOptions(@NonNull TaskAttribute attribute){
  OSIORestTaskSchema taskSchema=OSIORestTaskSchema.getDefault();
  if (attribute.getId().equals(taskSchema.WORKITEM_TYPE.getKey()) || attribute.getId().equals(taskSchema.AREA.getKey()) || attribute.getId().equals(taskSchema.ASSIGNEES.getKey())|| attribute.getId().equals(taskSchema.ITERATION.getKey())) {
    TaskAttribute spaceAttribute=attribute.getParentAttribute().getAttribute(OSIORestCreateTaskSchema.getDefault().SPACE.getKey());
    OSIORestConfiguration repositoryConfiguration;
    try {
      repositoryConfiguration=connector.getRepositoryConfiguration(this.getTaskRepository());
      if (repositoryConfiguration != null) {
        if (!spaceAttribute.getValue().equals("String_Node_Str")) {
          boolean found=false;
          attribute.clearOptions();
          for (          String spaceName : spaceAttribute.getValues()) {
            Space actualSpace=repositoryConfiguration.getSpaceWithName(spaceName);
            String key=attribute.getId();
            internalSetAttributeOptions4Space(attribute,actualSpace.getMapFor(attribute.getId()));
          }
        }
      }
    }
 catch (    CoreException e) {
      StatusHandler.log(new RepositoryStatus(getTaskRepository(),IStatus.ERROR,OSIORestCore.ID_PLUGIN,0,"String_Node_Str",e));
    }
  }
  return super.getOptions(attribute);
}

Fixed version (ground truth):
@Override public Map<String,String> getOptions(@NonNull TaskAttribute attribute){
  OSIORestTaskSchema taskSchema=OSIORestTaskSchema.getDefault();
  if (attribute.getId().equals(taskSchema.WORKITEM_TYPE.getKey()) || attribute.getId().equals(taskSchema.AREA.getKey()) || attribute.getId().equals(taskSchema.ASSIGNEES.getKey())|| attribute.getId().equals(taskSchema.STATUS.getKey())|| attribute.getId().equals(taskSchema.ITERATION.getKey())) {
    TaskAttribute spaceIdAttribute=attribute.getParentAttribute().getAttribute(OSIORestTaskSchema.getDefault().SPACE_ID.getKey());
    TaskAttribute spaceAttribute=attribute.getParentAttribute().getAttribute(OSIORestCreateTaskSchema.getDefault().SPACE.getKey());
    OSIORestConfiguration repositoryConfiguration;
    try {
      repositoryConfiguration=connector.getRepositoryConfiguration(this.getTaskRepository());
      if (repositoryConfiguration != null) {
        if (spaceIdAttribute != null && !spaceIdAttribute.getValue().equals("String_Node_Str")) {
          boolean found=false;
          attribute.clearOptions();
          for (          String spaceId : spaceIdAttribute.getValues()) {
            Space actualSpace=connector.getClient(getTaskRepository()).getSpaceById(spaceId,getTaskRepository());
            String key=attribute.getId();
            internalSetAttributeOptions4Space(attribute,actualSpace.getMapFor(attribute.getId()));
          }
        }
 else {
          attribute.clearOptions();
          for (          String spaceName : spaceAttribute.getValues()) {
            Space actualSpace=repositoryConfiguration.getSpaceWithName(spaceName);
            String key=attribute.getId();
            internalSetAttributeOptions4Space(attribute,actualSpace.getMapFor(attribute.getId()));
          }
          if (attribute.getOptions().size() == 0) {
            if (attribute.getId().equals(taskSchema.ASSIGNEES.getKey())) {
              String userName=repositoryConfiguration.getUserName();
              attribute.putOption(userName,userName);
            }
          }
        }
      }
    }
 catch (    CoreException e) {
      StatusHandler.log(new RepositoryStatus(getTaskRepository(),IStatus.ERROR,OSIORestCore.ID_PLUGIN,0,"String_Node_Str",e));
    }
  }
  return super.getOptions(attribute);
}