Use `BKE_curve_texspace_get` instead `BKE_curve_boundbox_get`. The snap to curve, even out of edit mode, is not done on the displist. So test a boundbox that covers the points seens in edit mode.
Use `BKE_curve_texspace_get` instead `BKE_curve_boundbox_get`. The snap to curve, even out of edit mode, is not done on the displist. So test a boundbox that covers the points seens in edit mode.