KMail stuck on loading message

[Maurice]

On Mon, 15 Jan 2018 18:41:46 +0000, I wrote:

> I have now moved over onto Mageia-6, using Thunderbird instead of 
> KMail

- and in the process have just noticed that - when filter-moving an 
incoming POP emil into a subfolder, TWO copies arrived.

So it's not only Kmail that is duplicating such emails...

  [I wonder of the ocasional duplication arises because both apps are 
using a common faulty subroutine somewhere.]

-- 
/\/\aurice