Bug#849868: kde-plasma-desktop: Middle button causes yellow box that can't be removed

[Nigel Horne <njh@bandsman.co.uk>]

Package: kde-plasma-desktop
Version: 5:91
Severity: normal

Dear Maintainer,

If you press the middle button of your mouse on the desktop an annoying yellow
box appears with your clipeboard contents in it.  I say annoying because there's
no way to remove the box, no dismiss button or "quit" option.

   * What led up to the situation?
   Clikck middle button.
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
     Right click, ps, look at task manager
   * What was the outcome of this action?
   No way to remove this pop-up
   * What outcome did you expect instead?
   A way to remove the pop-up


-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.8.0-2-amd64 (SMP w/20 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages kde-plasma-desktop depends on:
ii  kde-baseapps      4:16.08.3-1
ii  kde-runtime       4:16.08.3-1
ii  plasma-desktop    4:5.8.2-1
ii  plasma-workspace  4:5.8.2-1
ii  udisks2           2.1.8-1
ii  upower            0.99.4-4

Versions of packages kde-plasma-desktop recommends:
ii  kwin-x11      4:5.8.2-1+b1
ii  sddm          0.13.0-1
ii  xserver-xorg  1:7.7+18

Versions of packages kde-plasma-desktop suggests:
ii  kde-l10n-engb [kde-l10n]  4:16.04.3-1

-- no debconf information