Comment 10 for bug 1774121

(In reply to tasso.mulzer from comment #7)
> Wow .. this bug really lives in Thunderbird for 11 years, now?!

Kindly read the comments on this bug to understand that most likely it does *not* live in Thunderbird, but in the native filepicker dialogs provided by the OS.

> I can't "Save all" attachments with an "Open" dialog - it just won't save anything anywhere, at least in linux.

What happens if you do "Save all", select a target folder, and click "Open" (as in "open/use/select this folder for saving")?
If it does *not* save your attachments into that folder, please file a new bug for that.