On built gates and walls (wooden\metal) the barbed wire icons are not working as intended. Placing the barbed wire into a slot for upper part of the wall and mounting it, places it at the bottom part; and vice versa.

Build a fence wall/gate, place barbed wire into the slot for either lower or upper and mount it. The placed barbed wire mounts on the opposite slot it was placed into.

Mentioned icons(slots) should mount barbed wire on the correct side of the wall/gate.