I see it too with that message when putting in a not-fresh profile for POP3 server. On first POP3 get new messages it crashed with this console message: [Parent 717225, Main Thread] ###!!! ASSERTION: Expected 4 hex digits for flags.: 'MsgIsHex(mozstatus->value, 4)', file /home/gene/mozilla2/comm/mailnews/local/src/nsParseMailbox.cpp:1167 After that it was OK except for the bad UTF8 char indicator on each subject char: <?> <?> ... FWIW, it looks fine in the Inbox for IMAP for the same server (dovecot account accessed via IMAP and POP3 for test purposes).
Bug 1888790 Comment 19 Edit History
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I see it too with that message (pointed to in comment 18) when putting it into a not-fresh profile for POP3 server. On first POP3 get new messages it crashed with this console message: [Parent 717225, Main Thread] ###!!! ASSERTION: Expected 4 hex digits for flags.: 'MsgIsHex(mozstatus->value, 4)', file /home/gene/mozilla2/comm/mailnews/local/src/nsParseMailbox.cpp:1167 After that it was OK except for the bad UTF8 char indicator on each subject char: <?> <?> ... FWIW, it looks fine in the Inbox for IMAP for the same server (dovecot account accessed via IMAP and POP3 for test purposes). Repair also fixes the message in POP3 inbox.