CircleCI change history: Delays in pipelines, workflows, UI data, and notifications

CircleCI reported a major incident starting 2026-10-06 16:00 UTC, lasting 5 h 18 min and resolved at 21:18 UTC. Customers experienced pipeline failures, periods when no workflows or jobs started, and delayed UI data, notifications, webhooks, and commit status updates; workflows and jobs were starting normally by 20:31 UTC, and customers whose jobs failed to start were advised to rerun them.