Created attachment 159 [details]
The Cruxtruder and doors.

While building for my client, I tried to place a Cruxtruder and it got stuck partially in a wall, intersecting with a furniture item and a door. Any further attempts to modify the house were unsuccessful, I could not interact, place, deploy, or even select anything else. Pressing "C" still deducted the grist cost, but no door was given to me.

My client was still able to interact with the Cruxtruder, but the door inside it was off-limits.

Looking at it closer, the door is actually off-grid. 

After using /build, my client moved the Cruxtruder just fine and is able to build normally. (and also the off-grid door works like a normal door, interesting! collision-entering and all)