After tuning on the right lights in the moon room 2,3,5. I do not see a path as the picture shows. Is there a glich in the game ??

Here's the solution:

Click here to view a spoiler.

go down the stairs, swich to 3rd person view, walk near the wall until the camera changes position, from here walk to the center of the room, but don't step on the light. ( you have to reset the previous puzzle to complete this one)

And for a less blantant spoiler...

Don't follow the light. Note the differences in the floor pattern compared to the ones in the mural in the Gallery. What do you see? What stands out on that mural?