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GitHub Copilot change history: Degradation with Gemini 3.8 Flash

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17Major incident
When (UTC)ChangeKind
Major incident: Degradation with Gemini 3.8 Flash
GitHub Copilot reported major degraded availability for Gemini 3.8 Flash starting 2026-09-16 07:20 UTC, resolved at 2026-09-16 17:48 UTC (10 h 27 min). Requests failed at an average rate of 6.4% due to a capacity issue; other models were unaffected, and users could switch models or use 'Auto'.
Major incident