Alexander Schwartz ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=6267ec4... ) *updated* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiMzI1NmVlMDgx... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16337?atlOrigin=eyJpIjoiMzI1Nm... ) HHH-16337 ( https://hibernate.atlassian.net/browse/HHH-16337?atlOrigin=eyJpIjoiMzI1Nm... ) EntityCollection is not deleted when replaced ( https://hibernate.atlassian.net/browse/HHH-16337?atlOrigin=eyJpIjoiMzI1Nm... ) Change By: Alexander Schwartz ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=6267ec4... ) For the Keycloak project, I was able to reproduce the following: * Run Hibernate 6.2.0.CR3 on Quarkus aka Bytecode enhanced * Load an entry with a collection (ElementCollection in our case) * Replace the collection with a new collection * Run an unrelated query to trigger an autoflush test -> this will initialize a CollectionEntry with ignore=true, so it will be ignored throughout this session * commit Expected result: Only new entries are in the database Actual Result: Old and new entries are now in the database, als the old entries haven't been deleted. This problem doesn’t occur when bytecode enhancement is not used. Reproducer test case: [https://github.com/ahus1/hibernate-test-case-templates/tree/is-HHH-xxxx-e...] Keycloak issue: [https://github.com/keycloak/keycloak/issues/19162|https://github.com/keyc...] ( https://hibernate.atlassian.net/browse/HHH-16337#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16337#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#100219- sha1:ac3e918 )