Whilst I noticed this in E6, it seems to have been fixed for me for the past couple (and even e6 on rewatching). But not for lower decks.. The only real problem is her goons are just that, goons, and in the few interactions between her crew — for which I don’t even get subtitles on Amazon without turning them on for everything — there is very little sense of them.
Having said that, when I had the issue, Amazon didn't even give me then translation with subtitles on, I only got *speaking alien* come up on screen.
Conversely, the alien translation did come up on Lower Decks S1E2 if I had the subtitles on, but still not without.