Well I already have jellyfin running in a container, just have to figure out how to get mum's TV to work with it I guess
log in on a local IP and not the network name and it's working again. but I'll be moving to jellyfin from now
Plex will do the exact same thing if you have an episode earlier in your history that didnt get marked as “watched”. But plex lets you manually tag episodes as watched which usually fixes it. Maybe there’s a similar option in jellyfin?