244254 - "Mark message as read after X" causes IMAP to fetch attachments

Status: NEW

(MailNews Core :: Networking: IMAP, defect)

Description

[Lorenzo Colitti]

Using a thunderbird 20040520 trunk from CVS.

If "Mark message as read after displaying for X second(s)" is turned on in
Thunderbird's advanced preferences, clicking on an IMAP message fetches the
entire message including all attachments, so it takes a long time to load on a
slow connection.

Steps to reproduce:

1. Turn on "Mark message as read after displaying for X second(s)" in
Thunderbird's advanced preferences
2. Turn off View->Display attachments inline
3. Click on an IMAP message with a big attachment

The whole message is loaded, including attachments. This can be seen from the
IMAP log or deduced from the time it takes to load on a slow connection.

Turning off "Mark message as read after displaying for X second(s)" fixes the
problem, as does the hack in attachment 148941 [details] [diff] [review].

Comment 1

[David :Bienvenu]

We'll have to deal with this for tbird...

Comment 2

[Wayne Mery (:wsmwk)]

Joe, do you use "Mark message as read after displaying..."?

Comment 3

[Wayne Mery (:wsmwk)]

I can't imaging this still exists. What do you think?

Comment 4

[gene smith]

Is this what the reporter is referring to?

mailnews.mark_message_read.delay false
mailnews.mark_message_read.delay.interval 5

This seems to be the default so message is immediately marked as "read" when you click it.
I will try enabling this and see if there is any bad effect.
I'll leave NI set.