- Requires Erlang 25; nodes on older Erlang will fail to start (new baseline with performance gains)
- Reverts unsafe inter‑node optimization and fixes classic mirrored queue ordering, uneven load, and intra‑cluster link metric collector exceptions
- Fixes MQTT plugin bug where maintenance mode incorrectly closed all client connections cluster‑wide
RabbitMQ 3.11.2
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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.