Authors and administrators are subject to the same content package restrictions as learners. An author who does not share content packages with content cannot see this content.
Tip: Authors can only edit content from content packages that are directly assigned to them or their group. If they inherit content packages access from parent groups, they cannot edit the inherited content. This way, you can make sure, that restricted authors can see your content in the app, but are not able to edit it.
Access authorisation for authors in the library
More information on handling content packages can be found in the articles around What is a content package?