Why doesn't intersectsBox work correctly in threejs?

Question

JavaScript

Hello everyone, there is a problem with the intersectsBox method. I use it to find the outer sides of the building, if they do not intersect with the floor in the building itself, then the wall of the outer picture is attached. From the picture you can see that they do not overlap, but the method gives the opposite.

let areaObj = new Three.Box3().setFromObject(val);
let wallChildren = new Three.Box3().setFromObject(wall);
if(areaObj.intersectsBox(wallChildren)