Guillaume Toison ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=70121%3... ) *commented* on HHH-16553 ( https://hibernate.atlassian.net/browse/HHH-16553?atlOrigin=eyJpIjoiY2Q5YT... ) Re: StackOverflowError when loading entities chained together ( https://hibernate.atlassian.net/browse/HHH-16553?atlOrigin=eyJpIjoiY2Q5YT... ) Hello Andrea As you said the fetch type (not fetch mode, I misunderstood) should be lazy and not eager. I have modified the test case and it fails with @Proxy(lazy=false) while it works without @Proxy(lazy=false). I have the same behaviour with my real code base: a stackoverflow with @Proxy(lazy=false) and no error without it. To be honest I’m not sure how it could have worked with Hibernate 5, I guess that at some point it was using some proxies ( https://hibernate.atlassian.net/browse/HHH-16553#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16553#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- sha1:11e4e77 )