When it is a Great General's turn to move, white wavy "build road" recommendations appear on nearby hexes. Presumably the recommendation system is looking for a non-combat unit rather than specifically a worker. No such action option occurs alongside his move.
Coincident with this, a city state has asked for a road between capitals - not a problem of course, but it may be a contributory cause as long-distance road build recommendations do normally appear for workers when such a request has been made.
Coincident with this, a city state has asked for a road between capitals - not a problem of course, but it may be a contributory cause as long-distance road build recommendations do normally appear for workers when such a request has been made.