Just upgraded from 1.4.0 to 1.4.1. Sort by received date
no longer works, sorting is now by the Date header despite
enabling the "Enable Sort by of Receive Date" option (which
is grammatically incorrect). No change was made to any
other email system components.
Web server is running Red Hat 9 with Apache 2.0.40.
IMAP server is Courier-IMAP.
Possibly related to the recent fixes to header parsing,
or to the IMAP performance improvements?