Hibernate criteria: Wrong results when join + pagination

groovy

class Car {
    static hasMany = [brands: Brand]
}
class Brand { }

class CarService {

  def searchCars(int firstResult, int maxResults) {
    Car.createCriteria().list {
       createAlias('brands', 'brands', CriteriaSpecification.INNER_JOIN)
       'in'('id', [1, 2].collect {it.toLong() } ) // Make sure Car(1) and Car(2) have at least 2 brands
       setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY)
       setFirstResult(firstResult)
       setMaxResults(maxResults)
    }
  }

  // This assert fails
  def proveSearchIsBroken() {
    assert searchCars(0, 1).first() != searchCars(1, 1).first()
  }

}