All,
I suspect I have resolved this: https://github.com/hibernate/hibernate-search/pull/799

Any volunteer who could verify it on your more complex projects please?

We will then release it quickly.

You can either check out and build the project from my pull request, or get https://repository.jboss.org/nexus/content/repositories/snapshots/org/hibernate/hibernate-search-engine/5.0.0-SNAPSHOT/hibernate-search-engine-5.0.0-20150302.235109-54.jar