I know this is being fixed, but just to confirm the bug.
I went first time for the blue page, no problem there.
I went through the maze and mapped it out on paper, since I did not know the sound clue.
(I noticed the sounds though and wrote some down).
Found the exit and then I went back for the red page.
Once on the Island I forgot what I was supposed to do and did NOT take the red page and went to the maze.
There I decided to map out all the other turns, just in case there was something important.
BIG MISTAKE, when I entered the first possible turn to the SE that path just disappeared and there is no way back.
I attach the map I drew so you can see where it all happens.
I have no savegame, so I will have to wait for the fix. I had to use a walkthrough to see if this was a bug or just me being too stupid to figure it out. Too bad, I wanted to do the entire game without a walkthrough and I was doing well till then. And on the way I also picked up some spoilers which gave away the ending (thanks wikipedia

).

EDIT: Just a little add. I noticed even in my first run through the maze that some areas where lacking sound. I did not write that down, but I clearly remember on my picture on the bottom row the right circle was lacking sound. Then I just went back and took another way and got to the exit. Might be a general bug on the maze and the reason why I did not get the sound clues.