Summary: Not only can you designate 2 wall designs to be built in one building, but the builders will actually DO IT for you! Build two sets of walls on one building! Wild! Causes some really nifty z-fighting, which is a pretty cool design in its own right.
Steps to reproduce:
Go to the build & design tab.
Lay down a floor.
Put up one set of walls on the building.
PUT THE OTHER SET OF WALLS ON TOO.
Expected Results: The second set of walls ought to replace the first.
Actual Results: Both walls combine to make a masterpiece.
Well, you can click on the roof generation button twice, and the preview gets more and more opaque, so it is building more than one roof. I deleted it before testing to see of it built as two, but I realised too late that that crashes the game.
Title: Editing wall types seems to result in having both wall types at once
Summary: After the wrong wall type was selected when I was designing a house (see this report), I attempted to correct the situation in the edit tab of the building dialog. However, both wall types were then seen overlapping each other in the blueprint, and error messages were given. I ended up having to remove the entire building and build it anew.
Steps to reproduce: Probably just editing any old wall type will do the trick.
Versions and mods: No mods, latest release version in Steam at the time of writing, version 0.1.0 (release 110) according to the title screen.
OS: Windows 8 Pro 64 bits (6.2, build 9200)
Processor: Intel® Core™ i5-3450 CPU @ 3.10GHz (4 CPUs), ~3.5GHz