1957307 - "Decrypt & Save" command fails silently

Status: RESOLVED DUPLICATE of bug 1952823

(MailNews Core :: Security: OpenPGP, defect)

Description

[ThunderFan]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Steps to reproduce:

You need an email with GPG encrypted attachment.

1. Expand attachment list at the bottom.
2. Right click on GPG encrypted attachment and choose "Decrypt & Save As..." ("Odszyfruj i zapisz jako..." in Polish version that I use).

Actual results:

Looks like nothing happens.
However if you open "Error console" following error is displayed:

23:09:26.671 Uncaught (in promise) NS_ERROR_XPC_BAD_CONVERT_JS: Could not convert JavaScript argument arg 0 [nsIFilePicker.displayDirectory]
decryptAttachmentCallback chrome://openpgp/content/ui/enigmailMessengerOverlay.js:1923
bufferListener chrome://openpgp/content/ui/enigmailMessengerOverlay.js:1853
onStopRequest chrome://openpgp/content/modules/streams.sys.mjs:50
enigmailMessengerOverlay.js:1923

Upon clicking on first link (enigmailMessengerOverlay.js:1923), following line of code is selected:
fp.displayDirectory = Enigmail.msg.lastSaveDir;

Expected results:

"File Save" dialog should pop-up, offering saving of decrypted file.