SOLVED: Jellyfin removes new content after every scan

[TheDreadPirate]

Its a bit weird for TV shows. I think the max number of items listed in the latest movies section is something like 10 or 16. For TV shows its 100. But jellyfin treats each EPISODE of a TV show as counting towards that 100 item maximum. So if you have a large TV show with a lot of episodes it may be the only item on the latest TV show list. You have to add 100 new episodes of other shows before that large TV show is displaced.

Something about the way Jellyfin queries the database when generating those Latest lists. Its a known issue and requires a bit a database rework to address. So it may be a bit before that behavior is changed.