Instagram thumbnail ERROR

Since ~July 2, 2026, GET /v1/metadata for all Instagram reels returns description, author, stats, tags but media.thumbnailUrl is always absent (and author.avatarUrl empty) — 100% of requests, not intermittent. YouTube metadata returns media.thumbnailUrl normally on the same key. Repro: any public reel, e.g. instagram.com/reel/DKRUldhuOzt. This matches the open "missing thumbnailUrl/avatarUrl" issue but is now total, and appears to coincide with the fix for the metadata-404 incident.