Steps taken (can't repro):
- Logged into https://bugfest.folio.ebsco.com/ as folio/folio
- Went to Settings > Users > Permission sets
- Created a permission set called "Custom: All permissions", gave it a description then painstakingly added every single permission to this set
- Clicked save and close
Expected: One permission set should be created
Actual: Two were created
Additional information: I have since deleted the duplicate. Could not reproduce.