Android TV Jellyfin will not display certain PGS Subtitles

[Andokai]

Do you only have issues with PGS subs with a particular movie/show/episode?  Or across the board?

It seems to only be the Songs and Signs tracks of some Anime releases, generally all {We don't talk about sourcing - TDP}, yet some work. For example "Saga of Tanya the Evil" worked fine, but "Ancient Magus Bride, Spy x Family, Bungo Stray Dogs, Ouran Highschool Host club, The Case Study of Vanitas, Overlord, Fire Force, Black Clover, Assassination Classroom" dont. There probably is more, but those are all the ones I can remember testing and getting the error for sure. IDK why Tanya worked, it was a surprise for me as well.