There was one slot on the top-most piece that, for some odd reason, didn’t detect and adjust with the others. I saw absolutely no reason why it shouldn’t… so I did have to adjust one slot manually with the node editor. I’ll probably check into it further when the spirit moves me… 
Sadly, it didn’t handle the enclosed slots on the doll furniture, either. I wouldn’t be shocked/surprised, however, if/when that feature might appear some day as well.
EDIT: Just watched the LaHobbyGuy’s video on this and it does work with enclosed slots and tabs.
So, it’s not perfect but it’s such a handy and time-saving [but unexpected] feature, I’m not gonna gripe about it. The Lightburn folks are adding neat new capabilities at an unbelievable [to me] rate, so I’m just gonna hide and watch… and renew my license (I’m now “stuck” on LB 1.3.01) again if/when I see something new that I just can’t live without.
– David