Used the Zeus Mod

First Attempt:
Placed a Barracks Building
tried placing a sniper on the roof

Result:
Sniper falls through the building and dies

Second Attempt:
Placed a Tower
Placed a Rifleman on top of it

Result:
Rifleman Falls down through the Tower and dies

Expected result:
Any building placed by zues should be recognized as a physical objects and other object should interact with it exactly the same as they would an object already placed on the map

IE : A solider should not fall through the building

Note: I tried several other building with the same result