I tried starting from a new document and noticed that snapping occurs only for Y near the center of the page: draw a small path in the center of the page and you get snapping; the farther you move it from the center (in Y direction), less and less cusps are snapped to. It also seems related to the object dimension: something to do with snapping only inside a not correctly positioned bounding box?
I hope this helps.
I tried starting from a new document and noticed that snapping occurs only for Y near the center of the page: draw a small path in the center of the page and you get snapping; the farther you move it from the center (in Y direction), less and less cusps are snapped to. It also seems related to the object dimension: something to do with snapping only inside a not correctly positioned bounding box?
I hope this helps.