Two touching openings reached the subtract as cutters one lattice cell apart, leaving a 2.28 m^2 sliver of wall inside the opening that no manifold or edge-pairing check flags.
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.