runner-build not getting killed when fresh exits

[DallanQ]

I've been using fresh for several years and it's worked perfectly (thank you)! However, I recently encouraged co-workers to use it and their fresh installs leave the runner-build process running when fresh exits (when they kill fresh using control-c). Any ideas what's going wrong? One co-worker is running on mac and another on ubuntu. The runner.conf contains just ignored: vendor