On IFC import, an IfcDoor or IfcWindow with no opening or fill relationship to a host wall is dropped without a warning: on a 15 MB hospital model doors went 436 to 0, windows 305 to 0, with an empty warnings list.
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.