I confirm this regression for these exactly versions of software. Further discussion and workaround are here https://bugzilla.mozilla.org/show_bug.cgi?id=1287686 If your "Save as..." function also stop working in new Ubuntu, temporary solution is here https://bugs.launchpad.net/ubuntu/+source/cairo/+bug/1476736 Also reading of bug duplicates may be helpful.
** Bug watch added: Mozilla Bugzilla #1287686 https://bugzilla.mozilla.org/show_bug.cgi?id=1287686 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/1606164 Title: missing fonts in 45.2.0 Status in thunderbird package in Ubuntu: Confirmed Bug description: Thunderbird 45 seems to ignore Fontconfig: If bitmap fonts have been activated in Fontconfig, these can be used in Thunderbird 38 (xenial), but not in Thunderbird 45 (xenial-updates). Other applications (e.g. gnome-terminal) are not affected and continue to work with bitmap fonts just fine. 1) Ubuntu version: Description: Ubuntu 16.04.1 LTS Release: 16.04 2) Package version: thunderbird: Installed: 1:45.2.0+build1-0ubuntu0.16.04.1 Candidate: 1:45.2.0+build1-0ubuntu0.16.04.1 Version table: *** 1:45.2.0+build1-0ubuntu0.16.04.1 500 500 http://de.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages 100 /var/lib/dpkg/status 1:38.6.0+build1-0ubuntu1 500 500 http://de.archive.ubuntu.com/ubuntu xenial/main amd64 Packages 3) What is expected to happen: If bitmap fonts are activated (rm /etc/fonts/conf.d/70-no-bitmaps.conf ; ln -s /etc/fonts/conf.avail/70-force-bitmaps.conf /etc/fonts/conf.d/), Thunderbird is supposed to offer the fonts from the xfonts-75dpi package (e.g. LucidaTypewriter) under Preferences -> Display -> Formatting -> Fonts & Colors -> Default font and in the "Advanced" dialog there. 4) What happens instead: Bitmap fonts are not listed in Thunderbird 45. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1606164/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
