The mentioned message still comes when you have @Inheritance (strategy = InheritanceType.TABLE_PER_CLASS) in your abstract (not-persisted) with latest version of #Payara / #Glassfish which both contains #EclipseLink by default.
Strange that they did not yet fix it. And unfortunally migrating to e.g. #WilfFly (which uses other #JPA) seems not so easy as you may think.
Currently I have no idea how to fix it and sadly I need the strategy as this #JavaEE application is written for an existing database layout.
Someone may have to raise a support ticket mentioning that the #bug is still there.
Reposted with #public visibility. Sorry for double message.