System information

SolveSpace version: 3.0~33b6e517

Operating system: Debian Unstable

Expected behavior

Here's a clip I've been working on. It has a pass-through funnel made with a lathed bezier curve.
The difference between the upper face and the lathed surface is causing a naked edge:

As visible on the screenshot, the naked edge is only between the top face and the first visible point, the rest of the intersection is correctly computed.

Union is also correctly computed, and I can also get a correct difference by forcing a mesh geometry:

So maybe it's something easy to fix.
Test file: clip.zip

I tried to reduce the test case to a simple cube and a lathed bezier, but I wasn't able to reproduce it.