SonataAdminBundle: Global search ads wrong condition to custom query

My CompanyAdmin uses the createQuery method:

    public function createQuery($context = 'list')
    {
        $query = parent::createQuery($context);

        $query->addSelect(
                'PARTIAL ' . $query->getRootAlias() . '.{id, name, phone, fax, postcode, street, city, country}',
                'PARTIAL b.{id, name}'
            )
            ->join($query->getRootAlias() . '.branches', 'b')
        ;

        $query->where($query->getRootAlias() . '.id = 1');

        return $query;
    }

    protected function configureDatagridFilters(DatagridMapper $datagridMapper)
    {
        $datagridMapper
            ->add('name', null, array(
                'show_filter' => true,
                'global_search' => true
            ))
        ;
    }

The where condition is not added with an AND operator but an OR:

SELECT 
  DISTINCT c0_.id AS id_0 
FROM 
  companies c0_ 
  INNER JOIN branches b1_ ON c0_.id = b1_.company_id 
WHERE 
  c0_.id = 1 
  OR c0_.name LIKE ? 
LIMIT 
  10 OFFSET 0

This only happens when using the createQuery method and seems to be a problem of the global search adding it.

Without that method it is generated correctly:

SELECT 
  DISTINCT c0_.id AS id_0 
FROM 
  companies c0_ 
WHERE 
  c0_.name LIKE ? 
LIMIT 
  10 OFFSET 0