Segment change history: Issue with Engage UI

Segment reported a major outage affecting Engage UI page loads, including Audiences and Journeys, in the US. The incident started at 2026-09-03 18:30 UTC and lasted 4 h 11 min, resolving at 2026-09-03 22:41 UTC; a fix was applied at 09-03 20:26 UTC, restoring full UI functionality.