Subject: thunderbird: The "Download the rest of the message"-function does not work any more for POP3

From: Guenther Brunthaler <[email-masked]>
Date: Mon, 29 Oct 2018 05:30:26 +0100

Package: thunderbird
Version: 1:60.2.1-2~deb9u1
Severity: normal

Dear Maintainer,

When the Mozilla Thunderbird option for only downloading the mail 
headers of new POP3 messages is enabled, or if a maximum size for 
downloading of new POP3 messages has been set, it is possible for 
Thunderbird to download only partial messages.

Until before the most recent update of its package, Thunderbird 
displayed an internally-generated hyperlink "Download the rest of the 
message" for such partially-downloaded messages.

And when that hyperlink was clicked, the full message was downloaded, 
replacing the hyperlink.

In the current version of the package, the hyperlink is still displayed. 
But clicking on it has no effect.

The basic functionality for downloading the complete message must still 
be present, because the corresponding action in a mail filter still works.

But the hyperlink itself no longer triggers its intended action.

This is very unfortunate if one heavily relies on that feature in order 
to reduce traffic volume (especially to avoid the downloading of large 
spam messages) for volume-based ISP data plans.

I have no idea whether the same problem exists for other types of mail 
accounts than POP3. I do not use IMAP.

Steps for reproducing the problem.

* Select "Account Settings" from the "Edit" menu of Mozilla Thunderbird.

* Select a POP3-account for reproducing the bug, and go to its "Server 
Settings" page.

* Check the "Fetch headers only" option.

* Send a test message with arbitrary text in its mail body to the POP3 
account for which the settings have just been edited.

* Poll for new mails until the message just sent arrives.

* You should not see the body contents of the mail, but just an 
internally-generated hyperlink "Download the rest of the message".

* If you click that link, NOTHING HAPPENS. ...and that's the problem!

What SHOULD be happening instead: Thunderbird should access the POP3 
server, download the complete message, and replace the displayed 
hyperlink in the message contents pane with the body of the complete 
message.

-- System Information:
Distributor ID: Devuan
Description:    Devuan GNU/Linux 2.0 (ascii)
Release:        2.0
Codename:       ascii

Architecture: i686

Kernel: Linux 4.9.0-6-686 (SMP w/4 CPU cores)
Locale: LANG=de_AT.UTF-8, LC_CTYPE=de_AT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages thunderbird depends on:
ii  debianutils               4.8.1.1
ii  fontconfig                2.11.0-6.7+b1
ii  libatk1.0-0               2.22.0-1
ii  libc6                     2.24-11+deb9u3
ii  libcairo-gobject2         1.14.8-1
ii  libcairo2                 1.14.8-1
ii  libdbus-1-3               1.10.22-1+devuan1
ii  libdbus-glib-1-2          0.108-2
ii  libevent-2.0-5            2.0.21-stable-3
ii  libffi6                   3.2.1-6
ii  libfontconfig1            2.11.0-6.7+b1
ii  libfreetype6              2.6.3-3.2
ii  libgcc1                   1:6.3.0-18+deb9u1
ii  libgdk-pixbuf2.0-0        2.36.5-2+deb9u2
ii  libglib2.0-0              2.50.3-2
ii  libgtk-3-0                3.22.11-1
ii  libgtk2.0-0               2.24.31-2
ii  libjsoncpp1               1.7.4-3
ii  libpango-1.0-0            1.40.5-1
ii  libpangocairo-1.0-0       1.40.5-1
ii  libpangoft2-1.0-0         1.40.5-1
ii  libstartup-notification0  0.12-4+b2
ii  libstdc++6                6.3.0-18+deb9u1
ii  libvpx4                   1.6.1-3+deb9u1
ii  libx11-6                  2:1.6.4-3
ii  libx11-xcb1               2:1.6.4-3
ii  libxcb-shm0               1.12-1
ii  libxcb1                   1.12-1
ii  libxext6                  2:1.3.3-1+b2
ii  libxrender1               1:0.9.10-1
ii  libxt6                    1:1.1.5-1
ii  psmisc                    22.21-2.1+b2
ii  x11-utils                 7.7+3+b1
ii  zlib1g                    1:1.2.8.dfsg-5

Versions of packages thunderbird recommends:
ii  hunspell-de-at [hunspell-dictionary]  20161207-1
ii  hunspell-en-us [hunspell-dictionary]  20070829-7
pn  lightning                             <none>
ii  myspell-de-de [myspell-dictionary]    20161207-1

Versions of packages thunderbird suggests:
pn  apparmor          <none>
ii  fonts-lyx         2.2.2-1
ii  libgssapi-krb5-2  1.15-1+deb9u1

-- no debconf information