Hmm, hard to say, as I never yet see such things happen
What versions of Hibernate, Envers you are using, what's the mapping causing the problem?
I'm using Hibernate 3.5.1 and the version of envers that comes with it (the most recent I assume). I'm accessing hibernate through Spring 2.5.4. I'm wondering if there could be an issue with how the hibernate session is handled with spring. I'm attaching my hibernate/envers configuration in spring, and the mapping file for the entity that I'm auditing.
The mapping looks quite ordinarily. I don't use Spring so the appContext.xml file doesn't tell me much , but it looks normally aswell. Maybe you can try creating a failing testcase and report it on JIRA.
I know quite a lot of people which use Envers with Spring without problems, so you must have something special