Custom sorting in collections not working

[tom80H]

What version of PMS do you have installed on your setup?
IIRC, this was supposed to be fixed with PMS 1.25.7.5604

Plex Media Server

Plex Media Server 1.25.7.5604 is now available to Plex Pass users in the Beta update channel. NEW: (Security) Certain critical server-management requests are now logged regardless of the configured log level (#13394) (Security) Downgrading the server’s log level now requires a PMS restart (#13393) (Security) Preroll video files now must have a recognized video file extension (#13397) (Security) When possible, request logs now include the name of the device associated with the auth token (#133…