[kmail2] [Bug 402803] New: Bulk importing mail into sent-mail folder makes most sent messages unreadable

[Blase Johnson]

https://bugs.kde.org/show_bug.cgi?id=402803

            Bug ID: 402803
           Summary: Bulk importing mail into sent-mail folder makes most
                    sent messages unreadable
           Product: kmail2
           Version: unspecified
          Platform: Archlinux Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: bjohnson655 at outlook.com
  Target Milestone: ---

SUMMARY

I was trying to bulk import about 500 messages into the "sent-mail" folder. For
all but about the earliest one-fifth of messages in this folder, having a
message selected produces an empty HTML message preview, double clicking the
message makes a message transfer dialog box appear (which hangs), and an error
message is displayed at the bottom of the window (but is cut-off):

Unable to fetch item from backend (collection -1): Unable to retrieve item from
resource: [LRCONFLICT] Resource akonadi_maildir_resource_0 tries to modify item
<some number> () (in collection 15) with dirty payload, ab...

If I attempt to drag any of these messages into another folder, the following
error message is displayed in a dialog box:

Unable to retrieve item from resource: [LRCONFLICT] Resource
akonadi_maildir_resource_0 tries to modify item <some number> () (in collection
15) with dirty payload, aborting STORE.

I have both tried to import these messages using the Thunderbird/Mozilla import
filter and from an MBOX file. In either case the results are the same.

STEPS TO REPRODUCE
1. Import a large number of messages into the "sent-mail" folder.
2. Attempt to preview/open all messages.
3. Some messages cannot be opened and produce the above error messages.

OBSERVED RESULT

Some messages in the "sent-mail" folder cannot be viewed, opened, or moved, and
error messages are displayed in attempts to do so.

EXPECTED RESULT

All messages in the "sent-mail" folder can be viewed, opened, or moved without
errors.

SOFTWARE/OS VERSIONS

Operating System: Arch Linux 
KDE Plasma Version: 5.14.4
Qt Version: 5.12.0
KDE Frameworks Version: 5.53.0
Kernel Version: 4.20.0-arch1-1-ARCH

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