Three CAD gates looked for OpenSCAD's 2-manifold warning in stderr, but the default Manifold backend in OpenSCAD 2026.10.11 does not print it, so the gates could not fail on a pinched mesh.
From the Grok pain-radar digests, Oct 26-27 2026 (Oct 26 12:41 PM ET through Oct 27 7:41 AM ET digests plus the Haitch editions). Verified live 2026-10-27: issue/PR/thread read; title and state confirmed.