Arch Linux

Description:
Kmail 4.81 beta1 from testing crashes on creating new message using "New" button. Replies and starting messages from command line work fine.

Additional info:
* package version(s)
4.81 beta1 from testing
* config and/or log files etc.
The console output after pressing the button:

log_templateparser: AKONADI PORT: Disabled code in virtual QString TemplateParser::TemplateParser::findTemplate()
log_templateparser: Folder found: Collection ID: 28 remote ID: "/INBOX"
name: "INBOX"
url: QUrl("akonadi:?collection=28")
parent: 23 "imap://$USERNAME@imap.gmail.com/"
resource: "akonadi_imap_resource_1"
rights: QFlags(0x1|0x2|0x4|0x8|0x10|0x20)
contents mime type: ("message/rfc822", "inode/directory")
isVirtual: false
CachePolicy:
inherit: true
interval: 5
timeout: 60
sync on demand: true
local parts: ("ENVELOPE", "HEAD")
CollectionStatistics:
count: 3343
unread count: 0
size: 24380082
log_templateparser: AKONADI PORT: verify Akonadi::Item() here virtual QString TemplateParser::TemplateParser::findTemplate()
log_templateparser: AKONADI PORT: verify Akonadi::Item() here virtual QString TemplateParser::TemplateParser::findTemplate()
log_templateparser: Identity found: 686492709
log_messageviewer: Node UNprocessed: 0x9356000
log_messageviewer: SET NODE: 0x9356000 true
log_messageviewer: Node processed: "" "Content-Type: text/plain"
log_templateparser: Command: REM=
log_templateparser: Command: -
log_templateparser: Command: BLANK
log_templateparser: No appropriate charset found.
log_messagecomposer: initalising autosave
QObject::connect: Cannot connect MessageComposer::RecipientLineNG::addRecipient(RecipientLineNG*,QString) to (null)::addRecipient(RecipientLineNG*,QString)
log_kmail:
log_kmail: "$FULL_NAME"
*** KMail got signal 11 (Exiting)
log_kmail: current item 0 "\u041F\u043E \u0443\u043C\u043E\u043B\u0447\u0430\u043D\u0438\u044E"
log_messagecomposer: Plain text
log_messagecomposer: Autosaving message
log_messagecomposer: Chosen charset "us-ascii"
log_messagecomposer: Done.
log_messagecomposer: Making text/plain
log_messagecomposer: Calling process.
log_messagecomposer: Settled on encoding "7bit"
log_messagecomposer: A subjob finished. 0 more to go.
log_messagecomposer: Calling process.
log_messagecomposer: composing final message
log_messagecomposer: NoError.
log_messagecomposer: Writing message to disk as "/home/$USER/.local/share/kmail2/autosave/{e230b045-98f7-43de-ab28-07e98b169f64}"
[1] 10245 segmentation fault (core dumped) kmail


Steps to reproduce:
1. Open Kmail main window.
2. Start new message by pressing the "New" button or selecting "File->New->New message" in main menu or pressing "Ctrl+N" shortcut.