ClassCastException thrown in SessionFactoryImpl for named regions containing both entity and collection

Test case:

• using Hibernate 5.0.6 with ehcache;

• annotating the entity classes with @Cache

• both "someConfigurationCache" and "otherConfigurationCache" are reused for entity and collection as well.
  The result is "org.hibernate.cache.ehcache.internal.nonstop.NonstopAwareEntityRegionAccessStrategy cannot be cast to org.hibernate.cache.spi.access.CollectionRegionAccessStrategy", because the method determineCollectionRegionAccessStrategy in SessionFactoryImpl finds a region with the name required, but it is an entity region, not a collection region.
  The same scenario works with 5.0.3.