- Fixed a regression where 3.12.5 shipped an outdated seshat version, restoring compatibility with the stream subsystem.
- Improved forward‑compatibility of classic queues for the upcoming 3.13 release.
- Upgraded seshat to 0.6.1 and enforced a minimum Erlang 25 runtime (nodes on older Erlang will not start).
RabbitMQ 3.12.6
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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.