[kmail2] [Bug 340727] New: messages deleted from IMAP account (GMail) can end up in the local wastebin

[RJVB]

https://bugs.kde.org/show_bug.cgi?id=340727

            Bug ID: 340727
           Summary: messages deleted from IMAP account (GMail) can end up
                    in the local wastebin
           Product: kmail2
           Version: unspecified
          Platform: Other
                OS: All
            Status: UNCONFIRMED
          Severity: major
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: rjvbertin at gmail.com

Under certain conditions (IMAP account offline or not responding or ...?) it
can happen that messages deleted from GMail accounts end up in my local
wastebin rather than being moved to the configured wastebin folder on the
server.
When this happens, they remain "greyed out" in the folder they originate from
even when they have been removed from the local wastebin, for an indefinite
amount of time (= I have to connect through the web interface to delete them
there).

Sadly I cannot say how to reproduce the issue.

Reproducible: Sometimes

Steps to Reproduce:
1. Use a gmail account in a real-world usage scenario, which includes deleting
(selections of) messages while syncs are going on, etc.
2. Notice unread/unseen messages signalled in the otherwise unused KMail
Folders "account", that this concerns the wastebin, and also notice that those
same messages are greyed-out in their original folder
3. empty the local wastebin in an attempt to remove those greyed-out messages

Actual Results:  
Local wastebin is emptied but messages apparently remain on the server,
untouchable.

Expected Results:  
In fact, I'd expect that "Move to wastebin" and its keyboard shortcut move
messages to the configured wastebin, or not at all (i.e. defer/queue the
action) when that is not possible immediately, for whatever reason.

It would be OK to post a dialog "Cannot move message[s] to the configured
wastebin, $FOLDER, because $ERROR. Do you want to move it/them to a fallback
wastebin?". At least the user knows what's going on like that.

I'm marking this a major issue because of the unpredictable non-respect of a
user setting.

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