Fernando Zendron (Chucky) commented on an issue
Hibernate ORM / Bug HHH-7880
SessionFactory.openStatelessSession() does not respect tenant identifier from CurrentTenantIdentifierResolver
When you open StatelessSession on a SessionFactory with configured multitenancy, the session does not respect current tenant identifier supplied by CurrentTenantIdentifierResolver.

Instead an exception is thrown:
org.hibernate.HibernateException: SessionFactory configured for multi-tenancy, but no tenant identifier specified

This also affects MassIndexe...