I'm not sure if this is supposed to happen, but I certainly hope its not.
Lets work with two turfs Y and Z.
Y is a basic turf like grass placed on the map.
Now! Z is another turf with a pixel offset, of lets say pixel_y = 16.
When I place Z on-top of Y, Y suddenly gets a pixel offset of 16 leaving a gross black space of 16 pixels bellow it!
Why would the pixel offset of Z affect Y? They are meant to be two completely different atoms..