USN-5394-1 (libwebkit2gtk-4.0-37) causes regression in Evolution: impossible to compose email

[Christian Sarrasin]

This morning the security patch USN-5394-1 (https://ubuntu.com/security/notices/USN-5394-1) deployed on my laptop and following a reboot, I can no longer compose emails (or reply to emails) using Evolution (3.40.4-1ubuntu2). The composition window is blank. I'm on 21.10.

As a proof of concept, I have rolled back the relevant parts of USN-5394-1 as follows:

1. Restored libwebkit2gtk-4.0.so.37.55.9 and libjavascriptcoregtk-4.0.so.18.19.11 (in /usr/lib/x86_64-linux-gnu) from a ZFS snapshot.
2. Re-established soft-links `libwebkit2gtk-4.0.so.37` and `libjavascriptcoregtk-4.0.so.18` to point to above versions.

Does this bug belong somewhere else? If so, please guide me; I've raised it here because of the clear regression impact. I can't really choose between the vulnerabilities in USN-5394-1 and being able to write email...

[Launchpad Janitor (janitor)]

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

[mabab (mabab)]

Same on Ubuntu 21.10
evolution 3.40.4-1ubuntu2
libwebkit2gtk-4.0-37:amd64 2.36.0-0ubuntu0.21.10.3
Short workaround: Write your email with for example gedit und paste it into evolution. To control your email before sending, save as draft, control and send then.

[Christian Sarrasin (sxc731)]

FWIW, I've just upgraded to 22.04 and the version of Evolution bundled with it (3.44.0-1ubuntu1) doesn't suffer from this problem; so it affects 21.10 only.