1 you can not snap to intersection of clipping plane and a curve
2 i think a point should result from clipped curve. when clipped surface creates curve (edge), clipped curve should create point for the sake of consistency
That does not sound like RH-76997, nor RH-76791, which are the two issues discussed in this thread, and which are both fixed.
Are you, perhaps, referring to RH-83623 [Display: Poorly Visible Curves on Zero-Depth ClippingPlane] or RH-83644 [Display: Geometry Not Visible on Zero-Depth Clipping Plane] that you have recently reported, or something completely different?
As you can tell, my mind-reading skills really suck…
-wim