Referenced entity bodies are not returned for hierarchically fetched parents

[novoj]

The query:

{
  getProduct(url: "/pandora-naramek-moments-stribrny", locale: cs) {
    categories {    
      referencedPrimaryKey
      referencedEntity {
        parents {
          primaryKey
            attributes {
              name
            }
          tags {
            referencedPrimaryKey
            referencedEntity {            
                attributes {
                  code
                }
            }
          }
        }
      }
    }
  }
}

Doesn't return tag entities for parents even if they exist.