Hearthlings stop building

Hearthlings don’t finish building
Steps to reproduce:

  1. start building a large custom building
  2. wait

Expected Results:
Hearthlings finish building
Actual Results:
They stop and pretend they have no work to do
I tried pausing and continuing but it did NOT work

Version Number and Mods in use:

System Information:

never mind i reloaded and it worked