Guillaume ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=712020%... ) *commented* on HHH-15929 ( https://hibernate.atlassian.net/browse/HHH-15929?atlOrigin=eyJpIjoiMzFhMD... ) Re: Mapping jsonb of different types in a class inheritance hierarchy does not work. ( https://hibernate.atlassian.net/browse/HHH-15929?atlOrigin=eyJpIjoiMzFhMD... ) Exactly same kind of problems here with Hibernate 6.1 and Spring Boot 3.0.6. I can confirm Dan Spangenberger’s comment : we can notice lot’s of duplicate because of one of subclass is already registered… Look’s like it’s not possible to use JSON in subclasses… ( https://hibernate.atlassian.net/browse/HHH-15929#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-15929#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100225- sha1:e4eb869 )