[new_builder] Broken building - neither buildable nor editable

Summary: After I clicked build, my building got an “impossible error”. Now it hangs in a void where I can’t build it nor edit it. The building is selected (is shining) but after I place another block onto it, it gets deselected.

Steps to reproduce: I have no clue how to reproduce. I included my save.

  1. Notice there’s no blue outline around the building

  2. Placing the block

Attachments: Save: WoodenTemple.rar (3.6 MB)

Version Number and Mods in use: release 815 - no mods

System Information: Win 7; i5-2450M CPU @ 2,50 GHz; RAM 6GB; NVIDIA GT 630M 2GB VRAM