Shadows Issue

There's a shadows issue with on-wall objects, placed inside of rooms without floor, e.g. in loft builds. I've noticed it happening on apartment lots in San Myshuno, e.g. Foutainview Penthouse, and on normal lots, e.g. in Newcrest ( but on a specific height, while using maximum foudations ). I'm attaching screenshots showing the problem, please, fix it asap, it's really annoying to build with.