User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.1) Gecko/2008071615 Fedora/3.0.1-1.fc9 Firefox/3.0.1 Build Identifier: thunderbird-2.0.0.14-1.fc10.i386 (originally filed as https://bugzilla.redhat.com/show_bug.cgi?id=455909) I have a "Sent Items" folder on an IMAP server. Every single message in the "Sent Items" folder comes from "Jonathan Kamens <jonathan.kamens@tamalesoftware.com>". There are currently 217 messages in the folder. When I select "Sender" in the quick search box, type "Jonathan", and hit Enter, only seven matches are displayed, rather than the expected 217. The same is true if I search for "Kamens" or "jonathan.kamens@tamalesoftware.com". I have tried opening the properties for the folder and rebuilding the index. This does not help. I have tried unsubscribing and resubscribing to the folder. This does not help. I have tried exiting and restarting thunderbird. This does not help. Beagle is able to see all of the messages in the folder, once I install beagle.xpi from the beagle build (which is missing from the beagle-thunderbird RPM, as noted in a different bug report), so this tells me that the search which isn't working isn't using beagle. Edit > Find > Search Messages is also able to see all of the messages in the folder, so whatever the problem is, it's limited to the quick search box. Reproducible: Always Steps to Reproduce: 1.see above 2. 3. Actual Results: not all message are found Expected Results: they should be

It looks to me as though "Sender" is actually matching the recipient, rather than the sender (in 2.0.0.16). Does this line up with what you're seeing?

Lacking a confirmation, and having just seen a bug in IRC matching this description, I'm going to mark this one as a duplicate.