This issue was verified against WildFly 10.1.0.Final, which contains Hibernate 5.0.10.Final.

To reproduce:

• unzip WildFly 10.1.0.Final
• in bin\standalone.conf.bat, overwrite the line with memory options with: the following line:
  set "JAVA_OPTS=-Xms64M -Xmx256M -XX:MetaspaceSize=64M -XX:MaxMetaspaceSize=112m -XX:+HeapDumpOnOutOfMemoryError"
• launch WildFly through bin\standalone.bat
• unzip the attached User-WS.zip
• run "mvn clean install"
  repeat the following 2 steps until you get an OOME:
• run "mvn wildfly:deploy"
• access the application. I did this through Swagger: open http://petstore.swagger.io and Explore http://localhost:8080/user-ws/swagger.json

When looking at the heap dump, JavaTypeDescriptorRegistry still has a reference to one of the application classes, which prevents the ModuleClassLoader from being GC'ed.

PS: I can't seem to set the "Affects version"