I also agree that there's something off in the graphics department. Although looking across all the images, it's only in the diamond crossing that the illusion

I also agree that there's something off in the graphics department. Although looking across all the images, it's only in the diamond crossing that the illusion is horribly broken. The railings are mostly doing a good job of differentiating between the height levels, but if a junction is complex enough that the railings disappear for a significant portion of it, the differentiation is lost. OTOH, the diamond junction is an incredibly zoomed-in shot, so maybe we're overestimating from one picture the size of the portion without railings.