Been that way as far back as I can remember. Usually they camouflage themselves among the edges of the Extrude or Cut they create, but if you're removing material at the edge of the part or if the Sketch is a projection from a sheetmetal Flange, they end up visibly hanging out in space. But they've always been either all visible or all invisible depending on your visibility setting, whether they were involved with a feature or not.