Jellyfin on UnRAID showing first episode of every series in "Up Next"

[jellofinnn]

Are you migrating from Plex?  Are you using Trakt to sync watch status as you migrate?

Haven't migrated from Plex, it's my first ever media library, and no not using Trakt. 

Subtitles I do have installed (although most of these came pre-installed iirc):

AudioDB
IntroSkipper 
MusicBrainz
OMDB
Open Subtitle
Studio Images
TMDB
TMDB Box Sets

Thanks!