I saw post in another this other topic: Plex on Apple TV ignores own subtitle style - #8 by BigWheel
I tested disabling the “Override Subtitle Styles” on iOS and it fixed the problem. So it seems to be something to do with that setting being enabled breaking things.
This is a workaround though, not the actual solution to the problem - there are definitely some bugs involved with that setting being enabled.
Haha, yeap
