Going offline closes connection before POP3 QUIT command is processed
https://bugzilla.mozilla.org/show_bug.cgi?id=1801286
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Bug 1801286 - Wait for QUIT response in Pop3Client.jsm. r=mkmelin a=wsmwk
https://hg.mozilla.org/releases/comm-esr102/rev/c715064ce573a756b420b62bd8c87aae4ac9c713

cert override (for self signed certificates) dialog doesn't come up in many cases
https://bugzilla.mozilla.org/show_bug.cgi?id=1816596
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Bug 1816596 - Make pop3 cert override work again. r=rnons a=wsmwk
https://hg.mozilla.org/releases/comm-esr102/rev/5c657eb2cca5219689b10b8f3f0485df5e5070dd