[Tickets #15025] Horde mail client copies mail messages instead of moving using drag-n-drop

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Ticket URL: https://bugs.horde.org/ticket/15025
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  Ticket             | 15025
  Created By         | ngordeev at plesk.com
  Summary            | Horde mail client copies mail messages instead of
                     | moving using drag-n-drop
  Queue              | IMP
  Version            | 6.2.24
  Type               | Bug
  State              | Unconfirmed
  Priority           | 2. Medium
  Milestone          |
  Patch              |
  Owners             |
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ngordeev at plesk.com (2020-07-10 07:38) wrote:

hello everyone,

environment:
Win 2016 server
MTA: Mail Enable Standard 10.27
web mail: Horde IMP H5 6.2.24
Web Browsers: MS Edge (blink engine), google-chrome, Mozilla Firefox -  
all the latest stable versions


we faced with an issue below:
there is a manually created folder Inbox/FolderName  (was created with  
Horde web UI)
the use case is to move some messages to this folder (manually).  
Actually from exact sender, for example.

After choosing appropriate emails and moving them to this folder they  
are disappear from Inbox (which is expected).
But after re-login to Horde they appear in Inbox folder again.
At the same time these messages also present in Inbox/FolderName (I  
suppose they were copied on previous step.

An issue is not 100% reproduced.
It is better reproduced when you're using search (for example by  
sender like some_sender_domain word) rather than you're mark  
individual messages in the whole list.
In case marked messages (which you'd like to move) feet in one screen  
(or you have chosen 1-2 messages only) an issue mostly will not appear.

Unfortunately we were not able to debug this issue or find something  
interesting in JS error console.

Issue is reproduced on different browsers (MS Edge, Google-Chrome,  
Firefox) on different PC's under different user accounts.

It also does not reproduced at another web interface (we're tried to  
switch to embedded MileEnable web interface). After switching back to  
Horde an issue come back.