It was a "fresh" character generated with the first beta version, so it's been migrated along that path.
For the future, would it help if someone provided you with a save where the tracks are visible? I don't have one, but if it would, then this can serve as a "keep your eyes open" indication to players.
As an aside, I was quite happy to find UrW characters can distinguish between domestic pig and wild boar tracks, as when I got that quest there was at least one, and possibly two groups of those buggers leaving tracks all over the place (not in that tile, though, but I wouldn't have been able to find the tile if they did look the same).