- Requires Erlang 24.2+; nodes on older Erlang versions will fail to start (breaking change).
- Fixed intra‑cluster link‑metric collector exception after peer restart.
- Fixed MQTT plugin closing all client connections cluster‑wide when a node enters maintenance mode.
RabbitMQ 3.9.24
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Core server bug fixes: duplicate direct‑reply deliveries, quorum queue recovery issues, malformed AMQP 1.0 frames, topic‑exchange wildcard limits, and OAuth proxy header handling.