Hi, thanks for the link. I am glad I am not the only one having issues with attic walls! But this doesn't fully solve the problem.
This attic wall doesn't get generated automatically for some reason.
If I create it manually on the attic floor, set it an attic wall and bump the lower roof into it, then I get this:
If I activate the "Roof cuts wall at bottom, then I get this (the upper roof actually cuts the wall at bottom. I want the lower roof to do that):
The "lower wall type if split by butting roof does nothing!"
If I play with it manually, I cannot get the ceiling right:
The software should be able to handle this simple task!