Hi!
I was wondering if this is a known bug, when you add another admin user in the back end, and give them like Catalog and Attributes access and they start adding products they can't pull up the Attribute Set list, but if you change their role access to ALL they can immediately see the Attribute Set list.
In short: Attribute Sets Not Showing If you do not have FULL ADMIN ACCESS
I hope some else has this issue and has a resolution for it.
Thank you!