Amplitude change history: Experiment Management API Degradation

Amplitude’s Experiment Flags Management API (/api/1/flags) returned incomplete or empty flag listings; UI flags and /api/1/experiments were unaffected. The major incident started 2026-03-20 17:31 UTC, with symptoms reported since 16:00 UTC; it lasted 2 h 28 min and resolved at 2026-03-20 20:00 UTC after a verified fix.