Render depth Issue in Mod

[t1a2l]

I am using a mod called cemetery 2.0, since island bound i think i see an issue where the coffins appear under the table.
(see the image). below are the two objects (GraveCoffin and SmallTableMorgue), as they are in the materials.txt file.

BEGIN Object
Name GraveCoffin
Width 1
Height 1
ConstructionTime 0
MoveSpeedFactor 0.800000
Toughness 50.0000
Price -600
Properties Sellable
RenderDepth 1
Research Health
Group StaticObject
BlockedBy Wall
BlockedBy StaticObject
BlockedBy UtilityStation
MadeOf Wood
Properties StaticObject
Properties Scripted
Properties RoomSpecific
NumSlots 1
SpriteScale 1.2
BEGIN Sprite x 21 y 27 w 2 h 2 RotateType 4 TopAligned false
BEGIN Marker x 1 y 1.01 orientation.x 0 orientation.y 0 Index 0 END
END
WorkGroup Cemetery
END

BEGIN Object
Name SmallTableMorgue
Width 2
ConstructionTime 0
Toughness 10.0000
Price -50
Group StaticObject
BlockedBy Wall
Properties RoomSpecific
WorkGroup Cemetery
BlockedBy StaticObject
BlockedBy UtilityStation
MadeOf Composite
Properties StaticObject
Properties Scripted
NumSlots 8
Properties Processor
BEGIN Sprite x 26 y 34 w 4 h 2 RotateType 1 TopAligned false
BEGIN Marker x 1.016875 y 0.71875 orientation.x 0 orientation.y 0 Index 0 END
BEGIN Marker x 3.016875 y 0.71875 orientation.x 0 orientation.y 0 Index 1 END
BEGIN Marker x 1.026875 y 0.72875 orientation.x 0 orientation.y 0 Index 2 END
BEGIN Marker x 3.026875 y 0.72875 orientation.x 0 orientation.y 0 Index 3 END
BEGIN Marker x 1.036875 y 0.73875 orientation.x 0 orientation.y 0 Index 4 END
BEGIN Marker x 3.036875 y 0.73875 orientation.x 0 orientation.y 0 Index 5 END
BEGIN Marker x 1.046875 y 0.74875 orientation.x 0 orientation.y 0 Index 6 END
BEGIN Marker x 3.046875 y 0.74875 orientation.x 0 orientation.y 0 Index 7 END

BEGIN Marker x 5.016875 y 0.71875 orientation.x 0 orientation.y -1 Index 0 END
BEGIN Marker x 7.016875 y 0.71875 orientation.x 0 orientation.y -1 Index 1 END
BEGIN Marker x 5.026875 y 0.72875 orientation.x 0 orientation.y -1 Index 2 END
BEGIN Marker x 7.026875 y 0.72875 orientation.x 0 orientation.y -1 Index 3 END
BEGIN Marker x 5.036875 y 0.73875 orientation.x 0 orientation.y -1 Index 4 END
BEGIN Marker x 7.036875 y 0.73875 orientation.x 0 orientation.y -1 Index 5 END
BEGIN Marker x 5.046875 y 0.74875 orientation.x 0 orientation.y -1 Index 6 END
BEGIN Marker x 7.046875 y 0.74875 orientation.x 0 orientation.y -1 Index 7 END

BEGIN Marker x 9.015625 y -0.91875 orientation.x -1 orientation.y 0 Index 0 END
BEGIN Marker x 9.015625 y 0.41875 orientation.x -1 orientation.y 0 Index 1 END
BEGIN Marker x 9.025625 y -0.92875 orientation.x -1 orientation.y 0 Index 2 END
BEGIN Marker x 9.025625 y 0.42875 orientation.x -1 orientation.y 0 Index 3 END
BEGIN Marker x 9.035625 y -0.93875 orientation.x -1 orientation.y 0 Index 4 END
BEGIN Marker x 9.035625 y 0.43875 orientation.x -1 orientation.y 0 Index 5 END
BEGIN Marker x 9.045625 y -0.94875 orientation.x -1 orientation.y 0 Index 6 END
BEGIN Marker x 9.045625 y 0.44875 orientation.x -1 orientation.y 0 Index 7 END
END
ToolbarSprite TableToolbar
Research Health
END

 

[t1a2l]

It seems like the render depth property for modding is broken.