This is a followup of a Search bug: see https://hibernate.atlassian.net/browse/HSEARCH-1448?focusedCommentId=59117&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-59117 .
It is related to StatefulPersistenceContext.narrowProxy ( https://github.com/hibernate/hibernate-orm/blob/4.3/hibernate-core/src/main/java/org/hibernate/engine/internal/StatefulPersistenceContext.java#L638 )
This issue leads to missing results in Search (which filters out uninitialized proxy) but IMHO it's also suboptimal for ORM as, after narrowing of a proxy, the new proxy has to be initialized again.
AFAICS, we can initialize the new proxy with the entity of the original one.
I have prepared a pull request with a test case and a fix along those lines.
Would be nice to have some feedback about it and especially to be sure that it's safe.