I just verified that the problem still occurs with Hibernate 5.0.9 and 5.1.0.

Steps to reproduce:

• create sample database (see attached ddl)
• adjust database.properties in sample project to point to sample database.
• run project in tomcat using mvn tomcat7:run
• load web interface (see console output for URL), try to list As or Bs.

Note: problem only occurs if the database tables are non-empty, so make sure you insert a few records.