Am I right in thinking that 3D objects don't care about layers? I have a 3D object on layer 0, and a HUD on layer 5... but the 3D object appears above that because it's taller.
The only way to fix it is to either move the 3D objects down below the lowest level, or move the hud up... both of which alter their visible X and Y positions.
So yeah... am I right or wrong?