During your ride on JL, was the audio with the Joker working? While he was moving (very slowly) he wasn't "saying" anything.
Yes, the Joker's audio was working. And just to be sure I remembered correctly, I asked my kids the same question, and they also said his audio was working. Actually, everything worked. Even the fire effect, which doesn't work about 1/3 of the time in my experience.
Yep, the fire effect was working for a change.