Shady basement spawns without house upstairs

[molkero]

Describe the bug

Shady basement from the High Tech, Low Life scenario spawns without house upstairs.

Steps To Reproduce

Steps to reproduce the behavior:

1. Start game in High Tech, Low Life scenario.
2. Go upstairs.

Expected behavior

There would be a house above the basement.

Screenshots

Versions and configuration

• OS: Linux
  • OS Version: LSB Version: n/a; Distributor ID: ManjaroLinux; Description: Manjaro Linux; Release: 18.1.5; Codename: Juhraya;
• Game Version: 0.D-11681-gbfee67aeb0 [64-bit]
• Graphics Version: Tiles
• Mods loaded: [
  Dark Days Ahead [dda]
  ]

Additional context

Align stairs option does nothing.
EDIT: Looks like these non-existent houses are the only ones designated housing in the land use codes on the map.