Sheet-metal unfold failed three ways on bent parts from real STEP exports, with merged side faces read as panels and matching corner rounds paired into a zero-length bend that threw.
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.