I don’t disagree, but if it’s a case where the janky file problem ONLY appears in Jellyfin but not Plex, then, well, jank or not, that’s still Jellyfin doing something weird.
No reason why Jellyfin would decide the French audio track should be played every 3rd episode, or that it should just pick a random subtitle track when Plex isn’t doing it on exactly the same files.
No no, he’ll just change it so that all posts must be 14 words. Much less obvious.