evolution freezes after reply-all (high cpu usage webkitwebprocess)

[Stalker]

Hello

When answering large letters (reply-all, message size 300k+, long discussion, about 10 recipients) evolution mail-composer freezes. Process WebKitWebProcess loads CPU for 100%. After 5-30 seconds evolution comes back to normal. But when scrolling freezes again.

$dpkg -l | awk '{print $2" "$3" "$4}' | grep evolution
evolution 3.26.0-1 amd64
evolution-common 3.26.0-1 all
evolution-data-server 3.26.0-1ubuntu1 amd64
evolution-data-server-common 3.26.0-1ubuntu1 all
evolution-ews 3.26.0-1 amd64
evolution-indicator 0.2.20-0ubuntu31 amd64
libevolution 3.26.0-1 amd64

evolution in Ubuntu 17.04 freezes too

$lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu Artful Aardvark (development branch)
Release: 17.10
Codename: artful

[Emilio Gargiulo (emilio-gargiulo)]

Same problem:

root@lancelot:~# dpkg -l | awk '{print $2" "$3" "$4}' | grep evolution
evolution 3.26.1-1 amd64
evolution-common 3.26.1-1 all
evolution-data-server 3.26.1-1ubuntu1 amd64
evolution-data-server-common 3.26.1-1ubuntu1 all
evolution-data-server-online-accounts 3.26.1-1ubuntu1 all
evolution-ews 3.26.1-1 amd64
evolution-indicator 0.2.20-0ubuntu31 amd64
evolution-plugin-bogofilter 3.26.1-1 amd64
evolution-plugin-pstimport 3.26.1-1 amd64
evolution-plugins 3.26.1-1 amd64
libevolution 3.26.1-1 amd64

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.