Hi Hans,

Thanks for the prompt reply.

The room was created manually (not double-click), but the problem persists. Indeed, as you say, the room, which is actually a hall in the second floor, has "walls" that are not of the same height. Some of the walls are real walls, and some are a low metal ...

Hello,

I am using SH3D v4.2a (from getdeb.net) on Ubuntu 12.04 64-bit, Oracle Java 7.
When looking at the 3D view of a house I'm modeling, there sometimes appear strange floating triangles connected to corners of rooms. Those triangles are visible only from specific angles.

I attached a house ...