No longer able to snap to clipping plane edge

I am no longer able to snap to the edge of my clipping planes in Rhino 8 for Mac. I was able to do so last time i opened it but for some reason I cannot find the reason its stopped working.

Water Research Facility.3dm (18.7 MB)

The clipping plane system was completely revised in V8 with significant added capabilities. The infinite clipping plane is represented by a “widget” in V8 rather than by a plane type object as in previous versions. ClippingPlane | Rhino 3-D modeling

In V8 you can snap to the clipped edges of objects,

“The ExtractClippingSections command duplicates the section boundaries and fills from the objects clipped by the selected clipping plane as curves and hatches.”

Hi Thomas -

We have that issue on the list as RH-86211 Add snap points to the edges of the clipping plane widget
-wim