Villagers stop constructing premade buildings

I was building The Forge premade building and they completed the entire structure but wont take down all the ladders and scaffolding or place the forge and other essentials. i tried reloading but it didnt fix the issue.

i have release-701(x64) im using no mods


If you have the Forge placed in another location, pack it up and see what happens

Can you upload the save so we can take a look into it?
It should be in the save folder where yoh installed it

You can Zip it up and upload it in the forums

This has happened on many of the buildings. Usually removing it and building it again fixes the problem, but the forge will not complete for me.