Thank you for reaching out and for your post. While it might seem like a bug, this behavior is actually caused by the random distribution of wall meshes across the building. Fortunately, it can be easily resolved by enabling the “Delete Mesh at Custom Index” option. This setting allows you to remove specific meshes from the random distribution, which will eliminate the overlapping shelter.
That said, we understand this can be confusing, and we’ll work on improving it in an upcoming update. Thanks again for bringing it to our attention!