354117 - Most recent message disappears when using IMAP with Exchange

Status: RESOLVED INVALID

(Thunderbird :: Mail Window Front End, defect)

Description

[Michael Bordignon]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.7) Gecko/20060909 Firefox/1.5.0.7
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.7) Gecko/20060909 Firefox/1.5.0.7

The most recent message received appears to disappear from view when using an IMAP connection to an Exchange server. When an additional new message arrives in the mailbox, both messages are now displayed.

Reproducible: Always

Steps to Reproduce:
1. New message arrives via IMAP
2. Click on a folder under Inbox (any folder it seems)
3. Click on the Inbox again and the most recent message disappears from view, as if a rule has moved it to a different folder (which it hasn't).
4. When another new message arrives both messages are shown. Shutdown Thunderbird or click on a folder under the Inbox and the most recent message disappears again (until another new message arrives).
Actual Results:  
Message disappears

Expected Results:  
Nothing!

I'm assuming this isn't a bug with Exchange/Exchange IMAP. Don't know for sure..