An oversized via can leave an inner BGA pad with no legal escape and the autorouter burns time routing before failing, and separately 18 of 100 routing tests fail on an unchanged checkout.
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.