Apple TV Library Alias subtitles?

Hi, started re-watching Alias in my Apple TV Library (or whatever it's called) and was wondering about the subtitles. I believe when I first stared Ep 1 (the Pilot) they showed up when they spoke foreign languages. But then in the next few, they're not showing anymore. I tried switching on English Subtitles, and all it does when those scenes come up is the foreign language being typed out, not translated. Did they show the subtitles back when it aired and this is a glitch? I can't remember haha.