[New Builder] Build system attempts to redeploy furniture you've undeployed

Summary: I have tried to remove furniture from one of my buildings this evening in order to put higher tier furniture down instead. When doing so, the building seems to “uncomplete” itself and place down ghosts for the furniture I’ve just removed. The ghosts are then perpetually clipping with the furniture I’ve placed down and the building never “recompletes”. I’m unable to delete the ghosts of the old furniture with the erase tool.

Steps to reproduce:

  1. Place a templated building using the new builder.
  2. Undeploy pieces of furniture.
  3. Building will “uncomplete” itself and attempt to re-place those pieces you just picked up.

http://prntscr.com/jn6b53 <-- building with upgraded furniture
http://prntscr.com/jn6bcz <-- view from the build screen
Save File (10mb+)[Dropbox Link]

Version Number and Mods in use:

System Information:
Operating System: Windows 10 Pro 64-bit (10.0, Build 17134) (17134.rs4_release.180410-1804)
Language: English (Regional Setting: English)
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: G1.Sniper 5
BIOS: BIOS Date: 08/25/14 15:28:56 Ver: 04.06.05 (type: BIOS)
Processor: Intel® Core™ i7-4770K CPU @ 3.50GHz (8 CPUs), ~3.5GHz
Memory: 16384MB RAM
Available OS Memory: 16260MB RAM
Page File: 11439MB used, 7764MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 12