[Bug 277675] New: KMail marks some mails as unread when updating a folder

[Médéric Boquien]

https://bugs.kde.org/show_bug.cgi?id=277675

           Summary: KMail marks some mails as unread when updating a
                    folder
           Product: kmail2
           Version: 2.1.1
          Platform: Archlinux Packages
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: folders
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: mboquien at free.fr


Version:           2.1.1 (using KDE 4.6.4) 
OS:                Linux

When i "update [a] folder" (maildir), which can contain thousands of emails,
hundreds of emails are suddenly marked as unread. Always the same emails. Then
marking the mails as read, they remain in a "read" state until the next time i
restart kmail and perform the above-mentioned steps.

Reproducible: Always

Steps to Reproduce:
right-click on a folder and click on "Update Folder"

Actual Results:  
Some emails, always the same, are marked as unread.

Expected Results:  
Read mails keep the "read" status.

Receiving a new mail and clicking on the folder it got moved to for the first
time after kmail starts yields the exact same results.

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