Hearthlings keep working on building when building is paused

I placed three building templates, but paused the first two so that the people would concentrate on a single development. But they keep adding parts to the paused buildings. Especially furniture, scaffolding, and ladders.

Version Number and Mods in use:
release-798 [M]

worse yet, they “continue” to work even if you run of of materials making them idle until new resources are available. effectively preventing you from doing things like mining, etc.