The cabinets have some confusing snap-to behavior, since they can be either attached to a wall or to a ceiling.
They also conflict both with obstacles on the wall and obstacles on the ceiling.
They can't be placed by doors, hanging lights, etc. unless you enable bb.moveobjects.
I find the snapping annoying, just as with curtains. But the alt-place (option-place for me on a Mac) makes it easier.
Another trick you can try is to place the cabinet first, using the floor grid as a guide, then adding the wall after. So it only has the option of snapping to the ceiling and not the wall, when you're trying to place it. This is like that trick with the curtains, where you put the curtain up first then add the window after, so it isn't trying to snap to both the wall and the window.
