After a CAD edit, a boolean renumbers the result's faces, so the mesh comes out in a new order and the slicer re-plans most layers, with a 6 mm hole reused across 1,550 layers, against 2,831 of 2,885 with the order restored by hand.
From the Grok pain-radar digests, Oct 27-28 2026 (Oct 27 8:41 AM ET through Oct 28 7:41 AM ET digests plus the Haitch editions). Verified live 2026-10-28: issue/PR/thread read; title and state confirmed.