When attaching actors via the world outliner, there is an issue occurring using the visibility option, actors attached via the world outliner do not follow the visibility of what they are attached to. This issue does not appear to be a regression.
Versions Tested: Issue occurs in all versions tested
4.17.2 - CL: 3658906
4.18.1 - CL: 3754814
4.19.0 - CL: 3650786
Head over to the existing Questions & Answers thread and let us know what's up.