[hibernate-issues] [JIRA] (HHH-15640) NPE "ownerEntry" is null

Robert Rittwag ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *updated* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiNGU3NTBhZjU5... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-15640?atlOrigin=eyJpIjoiNGU3NT... ) HHH-15640 ( https://hibernate.atlassian.net/browse/HHH-15640?atlOrigin=eyJpIjoiNGU3NT... ) NPE "ownerEntry" is null ( https://hibernate.atlassian.net/browse/HHH-15640?atlOrigin=eyJpIjoiNGU3NT... ) Change By: Robert Rittwag ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) After updating Hibernate from v5 to v6 a Hibernate query returns the exception: {{java.lang.NullPointerException: Cannot invoke "org.hibernate.engine.spi.EntityEntry.getEntityKey()" because "ownerEntry" is null}} [pastebin with entire exception|https://pastebin.com/AwDKYN43] I narrowed it down to a [minimal sample project|https://github.com/rrittwag/hibernate-bug-ownerentry]. The issue is reproducible with at least H2 & PostgreSQL. This issue may be related to [HHH-15453|https://hibernate.atlassian.net/browse/HHH-15453]. ( https://hibernate.atlassian.net/browse/HHH-15640#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-15640#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#100209- sha1:d23b292 )