Octopus.Client is not returning all LibraryVariableSets

We have a powershell script that using Octopus.Client 4.6.1 and when calling LibraryVariableSets FindAll() or GetAll() it is only returning the first two. If we use the REST api directly via PostMan, we get them all back. Is this an issue with the Octopus.Client or some kind of configuration issue maybe?

Client version: 4.6.1
Server version: 3.3.2

Thanks for your time!