15 public Xyce regression decks run through ngspice and spice-ts: 12 failed in both engines, mostly on Xyce measurement syntax and dialect rejections, and all six AC decks failed; SPICE netlists still do not travel between simulators.
From the Grok pain-radar digest, Oct 24-25 2026 (Oct 24 evening to Oct 25 morning slots). Verified live 2026-10-25: issue/PR read on GitHub; title and state confirmed.