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If ZNC is relaying messages, it should not be sending echoes to the status window 2 connection, since the status window 2 connection has no idea about which messages were sent and is therefore not expecting echoes.

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If ZNC is playing back messages to the status window 2 connection, so that it shows the same channel/query window contents as the status window 1 connection, then the behaviour seems fine.


These two scenarios are exactly the same to me. How do you think they are different?

The echo-message spec has considerations specifically for bouncers, and ZNC is doing exactly what the spec says it should: sending echo-messages to all connected clients.

With that in mind, is mIRC adhering to this?
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Clients that receive self-sent PRIVMSG and NOTICE messages, MUST treat them the same way as if the client itself would have sent the message to the target.