It may correct itself as you zoom in. It seems to group geographic areas together in somewhat centralized locations to avoid having too many bubbles at a particular zoom level.
If you zoom in on the east coast of the US, for instance, jobs are grouped between NYC and Boston and the location of the bubble doesn't make much sense until you zoom in further and see them separated.
If you zoom in on the east coast of the US, for instance, jobs are grouped between NYC and Boston and the location of the bubble doesn't make much sense until you zoom in further and see them separated.