I'm not surprised about the boulder not functioning properly (it's always seemed to have its issues) but I am surprised that Disney has not fixed the "audio" for that room.
Ever since the update years ago where they replaced a bunch of speakers in the attraction as well as re-did the Indy in front of the Gate, the audio that Indy says at the boulder while hanging from the rope has ALWAYS malfunctioned.
Indy in the past has always had two separate responses for each sequence. One plays when you initially enter the room, while the second plays when your vehicle "backs up" as the boulder makes its way "towards you".
Sometimes when you enter the room Indy would say "Careful down there! I've got a BAD feeling about this!"
Then, when the boulder starts making its move, Indy would then say "Uh oh, oh no, get me out of here!"
Ever since the previous update, Indy will only say the 1st response of the sequence and NEVER the 2nd response that normally plays when the boulder starts rolling.
So right now, if Indy says "Careful down there! I've got a BAD feeling about this!" as the first response when you initially get into the room, he'll say the next sequences 1st response which would be "Hey it's dark down here! A rescue! Just what I need!" He'll NEVER say the 2nd part of the sequence as he used to before the prior upgrade.
To hear the complete set of sayings as they played in the original ride, check out this YouTube video: Indiana Jones Adventure: Temple of the Forbidden Eye - Indy Sayings [Boulder Scene] - YouTube
I'm probably making a mountain out of a molehill but I'm still surprised that with all the other work done on the ride that this glitch wasn't fixed.