Strange Bug with lightmapping

Hello friends!
I am creating a simple scene of a doctor’s office, but when I put unity to calculate lightmaps it returns me a totally distorted and bizarre result!

Here are the screenshots:



Does anyone have any idea how can I fix this problem?

Hard to tell, just based on the screenshot. Please, report a bug (using Help > ‘Report a bug’ main menu) with the scene opened and provide as much additional info as possible (what were you trying to achieve), so dev team will be able to reproduce it.

PS: In pre-release versions there used to be issues with some combinations of different realtime/baked lights, when light source was located on the same plane as the flat surface being lit. It looked a bit similar.