I can't zoom in quite enough to be positive of this, but like Cedric said, the roof ledge of that building is jutting out further than the others. The roof itself is also fading to white due to the Fresnel effect functionally turning it into a mirror that is reflecting the blown out sky, so you cant really see the line of that roof to draw the perspective line either.
It does look like if you run along the black underside you would see that line working though.