That’s very strange indeed. I just played Season 1, Ep 6 and got both the Japanese vocals and also the Dubbed track.
Do you have a Premium subscription (and watching it on the native Anime Network Player)?
Or are you watching it via Hulu?
However, this is the incorrect place to report it.
Please go to the Anime Network Technical Support & Customer Service thread.
Please state not only the problem you’re having, but also your Operating System & Browser.
That thread automatically alerts Administration and they check that thread frequently.
I will send them an email on Monday morning to make sure they see it.
Thank you,
Slowhand/Moderator