Firestick 4k Debloat mess with Prime subtitles?

I’ve enabled the 3 items to make Prime Video work, but I was just watching Absentia, S2E6 around the 26 minute mark. She’s speaking a different language and a blank box pops up, but no English translation. Guess it’s not really subtitles, but wondering if it’s error in the show or since debloat tool.