Yeah, this is what I mean. It doesn’t read as the edge of the screen in person, it reads as there being an overhang blocking the very top of the cabin from view. Why it’s there I’m not entirely sure, but it doesn’t read as a problem or mistake in person at all. It’s one of the best uses of the tech in the whole ride.I agree. I've found this complaint to be largely based on only seeing videos of the ride. There is no single screen that "ends" there, but multiple layered screens acting together to create a 3D illusion, which go pretty far up into the shell of the engine prop. In person, what people are perceiving as the "edge" of the screen comes across pretty clearly as a dimensional prop that is part of the train, which obscures the actual edges of the screens above it.
Honestly, I wish they had used this method of projecting for more of the ride, to give it more of a 3D feel, instead of primarily just projecting stuff onto walls. A similar technique is used in Na'vi River Journey and I think it mostly works very well there.