Sometimes when email comes in, and I'm viewing in threaded view, it shows up twice. Open/closing the "+" grippy next to the thread makes more duplicates of the message show up - it is like the close doesn't grab the sub folder view, and clicking the open duplicates the contents (but the wierd thing is it duplicates the parent email, not just the contents). Using IMAP. Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.2b) Gecko/20021105

I might be able to provide more info. I get it on IMAP as well, but on a Linux build of 1.3 (Xft version). It appears to affect messages with attachments, however not all messages with attachements. I can't replicate it at will, but it does occur reasonably often. I don't recall it occurring with a non-attachment message. Clicking the "+" shows 3 copies of the first message, but not the unread message. Clicking '-' after removes just the second from top, leaving 2 dangling below the top one. This occurs no matter how many unread messages are below it. Repeating does the same, leaving 4 dangling and so on. Switching to "All", no threading, shows all of the repeats and not the unread messages, all one after the other. Changing to unread finally shows the unread messages. Changing folders and coming back does not help, but restarting Mozilla does. Deleting the original message marks all the duplicates with an empty subject and 01/01/70 as the date, but doesn't remove them. If you then change folders and come back, the next message in the thread has the same effect, except that pressing plus shows no messages below it (just puts the grey dots under the plus), and the plus/minus remains. So it appears the internal state of mozilla is corrupted regarding that thread, but not IMAP itself. However, it does start affecting other messages, marking them unread so I don't really feel safe continuing to use it once it first happens, and I restart. Hope this helps!

related to bug #154403

are these in-line attachments? i.e., attachments that are displayed when the message is selected? Does the view get messed up when the new messages are downloaded and inserted in the view, or when you read one of the new messages?

The duplication occurs during the message download phase (although I don't recall if it ever occurs during the initial Message-client startup, but I don't think so, as the work around is to reboot Mozilla and the message duplication goes away). Reading of (valid) new messages works fine. Sorry, I haven't had this happen in a while so it is hard to tell if it has been fixed, or just the phase of the email moon is not quite right.

there was a fix checked in for something quite like this a few months ago. I don't know if this is a dup of an earlier bug. Does anyone see this with recent builds?

To address these comments: - I have seen this in the 1.3 release (see comment #1). - I haven't seen it happen with inline attachments, definitely happens with those that aren't (.doc files mostly). - I think it could be related to interrupting the loading phase by clicking away, but not sure.

I would like to verify as well that yes, indeed, this bug is still present in 1.3 (Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.3) Gecko/20030312). I witnessed this bug again this morning. See here for screenshot: http://www.ultraemail.net/~jbj1/mozilla-screenshot.png I moved this message to an IMAP account on my linux box so I could easily get at the full message to put it up for inspection as well and when I did that the two "extra" message lines in the list remained but now their subject was blank and the time on the message shows 12/31/1969 6:00pm (I'm in US/Central time zone so looks like the UTC time on this message would be 1/1/1970 0:00). Here's a screen shot of this: http://www.ultraemail.net/~jbj1/mozilla-screenshot2.png I should not that I suspect that in all cases where I've seen this behavior the sender's MUA has been Outlook (Express). The email (full rfc822) in question I have also put here in case that would help someone: http://www.ultraemail.net/~jbj1/offending-email.eml

Also, it looks like http://bugzilla.mozilla.org/show_bug.cgi?id=194444 is a dup of this bug.

*** Bug 193940 has been marked as a duplicate of this bug. ***

*** Bug 236555 has been marked as a duplicate of this bug. ***

This problem is also present when reading newsgroups. Look at my closed bug 236555.

can anyone recreate this with 1.6 or 1.7?

Even with the nightlies (Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7a) Gecko/20040219), but also on some of the prior milestones, I still see occaisional problems with a bunch of empty parent and subtree items when they are deleted from the last message in the window position, usually by the spam filter (on IMAP, happens after the messages come in, a bunch are deleted leaving wierd sort of empty placeholders) that stick around until I change folders then go back. I'll take a screenshot the next time I see this.

Bug 194444 a possible dup. Also happens in thunderbirds bug 275697 Bug 326313 core problem?

FYI, I haven't seen this is quite a while. Currently running Tbird 2.0.0.6 and SeaMonkey 1.1.4. Should I set this WFM?

No reoccurrence in a while. Marking WFM.