Workers would almost do a lap of the main building if you sent them out of your base, rather than go directly out.
Hard to explain, I think you can find a video on it if you search "workers 1.5 not fastest path" or something like that. Was on TL.
Even the smallest donations help keep sc2sea running! All donations go towards helping our site run including our monthly server hosting fees and sc2sea sponsored community tournaments we host. Find out more here.