IMAP malformed header from script. Bad header

[Matthias42]

Hallo zusammen,

hatte heute Probleme beim Abrufen von E-Mails aus dem IMAP Postfach. Fehler im httpd error log:

[Tue Jan 19 09:13:10 2016] [error] [client 10.111.96.40] malformed header from script. Bad header=[...cpan-lib/Net/IMAP/Simple.p: index.pl, referer: https://otrshost/otrs/index.pl?Action=AdminMailAccount
[Tue Jan 19 09:13:10 2016] [warn] /otrs/index.pl did not send an HTTP header
[Tue Jan 19 09:15:07 2016] -e: UTF-16 surrogate 0xd83d at /opt/otrs//Kernel/System/HTMLUtils.pm line 479.
[Tue Jan 19 09:15:07 2016] -e: UTF-16 surrogate 0xde0f at /opt/otrs//Kernel/System/HTMLUtils.pm line 479.
[Tue Jan 19 09:15:07 2016] -e: (in cleanup) Can't call method "Get" on an undefined value at /opt/otrs//Kernel/System/AuthSession/DB.pm line 583.
[Tue Jan 19 09:15:07 2016] [error] Malformed UTF-8 character (fatal) at /opt/otrs//Kernel/System/DB/mysql.pm line 114.\n\t(in cleanup) Can't call method "Get" on an undefined value at /opt/otrs//Kernel/System/AuthSession/DB.pm line 583.\n

Anscheinend waren in der E-Mail UTF-16 kodierte Zeichen. E-Mail per Outlook aus der Inbox verschoben. Danach konnte OTRS die restlichen
E-Mails abrufen. Problematische Zeichen in der Mail: �&#56847

Hatte den Fehler bereits jemand? Ist das ev. in einer neueren Version gefixt?

Vielen Dank!