The hibernate-jipijapa module included with Hibernate is currently unusable. Attempting to do so results in the following exception failing application startup on the WildFly application server:
The WildFly code this module is based on is not affected by the same issue. After some digging through past commits, it looks like it introduced by some refactoring between the point the code was first introduced into Hibernate from the WildFly module and when it was first released as part of Hibernate 5.3.
A replicating test case alongside the fix is included in the associated topic branch.