1692450 - additional and incorrect Sender field added to all mails

Status: RESOLVED DUPLICATE of bug 1670243

(Thunderbird :: Message Reader UI, defect)

Description

[Florian.Beaudette+bugzilla]

Attachment: Screenshot 2021-02-12 at 11.48.13.png

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:85.0) Gecko/20100101 Firefox/85.0

Steps to reproduce:

I have one particular mail that I have received, and it impacts the way all other mails are displayed. The problem goes if I restart thunderbird but comes back as soon as I re-open that mail.
To reproduce the problem, one would need to have such an email in his/her mailbox. I can forward that mail or copy the header upon request privately.

Actual results:

If I open a particular mail that I have in my inbox, all the other mails that I open afterwards in thunderbird will show the "Sender" field of that particular email, including those which are in other mailboxes.
I have attached a screenshot where I had to blank some information. The "particular" email had been sent to an other mailbox than that shown.
I would like to mention that: 1) the mail that triggers the problem has been sent automatically by a service 2) the file that contains this email in my imap folder (maildir) seems to have a rather short name made of a subset of the sender address followed by @anonymous.eml

Expected results:

The "Sender" field should just not appear when not relevant.

Comment 1

[Gerald Vogt]

The is probably a duplicate of bug 1681919.