Rationale: This patch is meant to enhance user experience in case a client software is used to maintain data directly via LDAP. This is a real-world issue.

Find the patch against master here: https://www.stroeder.com/temp/0001-ITS-8866-slapo-unique-to-return-filter-us...

Also cleanly applies to RE24 and therefore could be easily added to upcoming release 2.4.47. ;-)