External part of building is missing from Geometry LOD is missing, allowing a player to walk inside the building's geometry.
Some internal parts of building adjacent to it are missing from FireGeometry LOD, allowing to shoot through it.
Tested with current diag build of Arma 3 (["Arma 3","Arma3",213,150296,"Diag",true,"Windows","x64"]) and CUP mods (stable/not dev) from Workshop.