Add this to the https://github.com/spring-projects/spring-petclinic:
If you also change the parent pom version to spring boot 2.2.0.M4 you will get Hibernate 5.4. I also tried with 5.4.3.Final by manually setting hibernate.version. In all cases you get a java.lang.VerifyError at runtime (e.g. tests all fail). Example:
I found I can "fix" it by removing the <enableAssociationManagement>true</enableAssociationManagement>, so I guess that's a workaround.
Linux, Java 8 (and 11).