The router's own check and KiCad's DRC disagreed twice on one board (a plane join walled off by vias, copper 0.8 um too close to a cutout), and wiring KiCad DRC into CI then found 698 errors from stale GND pour fills the tool had never warned designers to refill.
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.