Adding decoration to completed building causes scaffolding system to be rebuilt for entire structure

Strange scaffold/ladder construction occurring when trying to add stone lamps on interior of building.
here is a screenshot of the offending scaffold ^^

Hearthlings begin planning to build scaffold and ladders all over the already completed building. Iv’e had this occur a couple of times with more than just a stone lamp. Here are a few shots of the house before trying to add interior items.


Can confirm on Alpha 12 release 472 as well.

Paging @Ponder and @not_owen_wilson