A Jellyfin item can return after a scan when the server could not delete its file
Jellyfin documents a difference between library removal and filesystem deletion when write permission is absent.
The journal
The viewing journal — page 109
Practical reading about streaming, devices and the decisions behind a better prepared setup.
A new Jellyfin library is not automatically granted to every selected-library user
Jellyfin distinguishes access to all libraries from an explicit selection that does not inherit new libraries.
Jellyfin’s Connection Failure login message can accompany a locked user
Jellyfin’s user-management guide documents account lockout with a connection-style message and an administrator unlock route.
Jellyfin DLNA requires its plugin and a suitable local discovery path
Since 10.9, Jellyfin documents DLNA as a first-party plugin rather than part of the base server installation.
Jellyfin skip controls need media-segment data and a client that uses it
Jellyfin separates segment providers, scanning and client playback actions.
Jellyfin 12 upgrade planning includes case-distinct usernames and a required library scan
The 12.0 release notes identify account-name collisions and rebuilt version links as specific migration checks.