i created a (Semi) procedural building all with boolean, i wanted to make the building with its structure all in one piece.
Untill there everything works, but when i try to apply a voronoi, the create inside edges goes beserk.
i checked my normals along the whole process of the boolean, i added divide nodes not to have poly with more than 4 points fuse things at everystep
The building is extremely clean.
And still whatever i do the crate inside edge gives me wrong result.

if i try with one floor and the roof it works without a problem.

if i add 2 floors and so the problem starts..it seems there is something that goes wrong when i bool every floor but i cannot find what it is

thanks for your help, and enjoy the test building for destruction(if you get it to work)