[R874] Some furniture items (fences?) stop a building from being built

Some furniture items (so far I think its fences) will stop a building from being built.

Steps to reproduce:

  1. Draw out a room, floor, or piece of road.
  2. Place fences around it.
  3. Click to build.

Expected Results:
The building should pass and be built.

Actual Results:
The building cannot be built until the fences are removed.


Version Number and Mods in use:
Release-874 (x64) - no mods.