When (at least) services/chanserv rejoin a server after a netsplit, they currently (bad, but in the specs) broadcast back to all clients that they support SASL via a CAP message.
This CAP message is displayed in the status window as is, not in an explicit error/state/info message
Is it on purpose that the message is displayed, shouldn't be mIRC hiding it?

If on purpose, could we get an option to hide them?

Currently, mIRC only hides CAP events during CAP negotiation while logging on.

After logon, mIRC assumes that any further CAP events should be displayed since they are likely being initiated by the user with the /cap command, in which case the user would want to see the results.

I could change this to hide the NEW/DEL events, assuming that these are only ever initiated by the server. However, if mIRC sees a NEW that offers a feature it can use, it will enable it, and the CAP results for that will be displayed.

All other CAP events, apart from NEW/DEL, will continue to be displayed.