Could have sworn I finished the mirror twice in a game. It might not have been on 1.6, though, if that means anything.Found a bug on Funhouse. The Mystery Mirror can only be completed once. Previous behavior was it would clear the lights after activating the Super Frenzy mode, allowing it to be completed again. Now, after completing the mirror and activating Super Frenzy, the lights don't clear and the mirror is now useless.
As for the pop sounds, I like them, but I'm not certain they're all that authentic.