I agree.

I haven’t had much issue with Jellyfin, but I don’t watch a lot of things with subtitles. I don’t have a lot of specialized video, just some TV shows, movies and music dumped on a local computer. I think we had an issue with a video where we couldn’t figure out how to change the audio channel (default was not set to english) but that might have been fixed in an update? I’m not sure. I just grabbed a different copy.

The IOS app is not very good though. If you start the app, you can lock the screen once while having background playback. After that you have to force close and re-open it for background playback. Not sure why, might be an IOS bug honestly.