I’m encountering some issues with the Rack layout when I have multiple devices share the same rack unit. When there are more than one device on the same rack unit, the side view displays them in a linear fashion, with one device in front of the other, even though the other device is actually behind. 
It appears that the device may require a Z axis coordinate in addition to the existing X and Y coordinates. 
Is there a way to overcome this issue, or is it a limitation of the software?

Thanks