I forgot to mention that we experience the problem with TB 64 bit. That means that both versions are broken (@Thunderfan confirmed it for the 32-bit version).
Furthermore, if it helps, I can provide a message example as .eml file if it would help with resolving the issue. If somebody is interested, please let me know how I can send you the example in a safe way. I won't publish it here because it contains a lot of personal data, and while I could easily remove that data from the message itself (I know how to operate a text editor :-)), removing it from the encrypted attachment is not that easy and would at least take some time. -- 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/1902801 Title: Encrypted attachments cannot be opened or saved as decrypted files Status in thunderbird package in Ubuntu: Fix Released Status in Arch Linux: Confirmed Bug description: I have been using enigmail in thunderbird until I upgraded Ubuntu and with it thunderbird to the latest version 1:78.3.2+build1-0ubuntu1 As enigmail is now integrated in thunderbird, I have gone through the painful upgrade process (it does not allow to look into passwordmanager for the pasphrase of the gpg keys it wants to import by blocking all other windows), and decryption of emails now works. But when looking at a decrypted email, fully being able to read the text content, when I want to use the Menu option "Decrypt and Open" by right clicking on an attachment (pdf in this case), nothing happens. What I expect to happen: The pdf file being shown to me in the pdf viewer. Or some error being displayed, or maybe I am asked for my gpg passphrase again for additional security. When trying the option "Decrypt and save as", next I can select a folder and filename, (the pdf name without .gpg) and chose "save" - but when looking into that folder, there is no decrypted file. (I tried this plenty of time, I am sure its not there, and I did this action before the upgrade many times successfully). What I would expect: the attached file without the .gpg suffix (the filename proposed when opening the dialog, which I did not change) in the selected directory. $ lsb_release -rd Description: Ubuntu 20.10 Release: 20.10 $ apt-cache policy thunderbird thunderbird: Installed: 1:78.3.2+build1-0ubuntu1 Candidate: 1:78.3.2+build1-0ubuntu1 Version table: *** 1:78.3.2+build1-0ubuntu1 500 500 http://de.archive.ubuntu.com/ubuntu groovy/main amd64 Packages 100 /var/lib/dpkg/status To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1902801/+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