Actually it is in the way, you can only see the mesh for the visible model, what you can't see is the collision mesh, I believe that for trusses, cantilevers and roofs that mesh is a solid 4x4x4 block, with 8x8s having 4 of them butted together.
Tents and tee-pees and the other storage architecture don't play well with the new stuff, their collisions are quite a bit off, a pup tent for instance wont sit on a truss, 0.5 is as close as it gets, so I get the feeling they are meant to be outside and on the ground.