"Doodads" show up without being placed

Bug: as soon as the building was started, the “doodads” (doors, windows, lamps) appeared without having been crafted or placed before (i.e. the crafter had never even made any of them)

I closed it before realising I should take a screenshot, but this picture was in the save folder:

As you can see, the doors / windows should not be there.

It may help you to know that this bug also occurred after I reloaded this world.