Thank you! The descriptions of the issue that I found do reflect what I experienced:
https://pagure.io/389-ds-base/issue/49815
https://bugzilla.redhat.com/show_bug.cgi?id=1605554
DS Version: 389-ds-base-1.3.7.5-24.el7_5.x86_64
I've applied your recommended solution and will report back if the issue resurfaces.