Thank you for your report.

Unfortunately, Hibernate Search 5.5 is no longer maintained as a community branch, so it won't be receiving a fix for this problem.

That being said, if a later version (5.6.x, 5.9.x or 5.10.x) is still affected, we will definitely try to apply a fix to those branches, and you can upgrade to one of those versions to benefit from the fix.

I was not able to reproduce your issue. Maybe you could try to upgrade to Hibernate Search 5.6 and see if it still affects you? See these instructions for WildFly). Just be careful about the version, 5.6.6.Final has just been released but did not hit Maven Central yet (we're experiencing sync issues), so either grab it from SourceForge or use 5.6.5.Final for now.

Also, there might be more to the problem than the configuration you showed: some corner case related to your overall mapping, some unusual entity saving pattern, ... The best way to help us reproduce your problem would be to provide a test case based on our test case template. I pushed my unsuccessful attempt to reproduce your issue to the HSEARCH-3358 branch of my fork, maybe you could iterate on that?