Bug#862413: mate-desktop-environment: Transfer of email attachment from simplescan to sylpheed fails

[Daniel Auth]

Package: mate-desktop-environment
Version: 1.16.0+1
Severity: normal

Dear Maintainer,

I am running debian-stretch, a fresh install, with mate desktop environment.
I use the programs simplescan for scanning and sylpheed as an email client.

I scan a paper with simplescan. Then, in simplescan menubar, I click on
File -> Email. That opens the preferred emailer application (which is sylpheed)
with a compose window. The attachment does not appear in the compose window.

Expected behaviour:
Scanned paper appears as an Attachment in mailer's compose window.

I have tracked down the problem so far:

simplescan creates a temporary file, a pdf that should be the attachment  (works)
simplescan calls xdg-email, with a parameter defining the attachment (works)
xdg-email calls gvfs-open mailto....  
sylpheed's compose window opens but does not show the attachment.

Where the problem does not occur:
simplescan + sylpheed + xfce
simplescan + claws-mail + xfce
simplescan + claws-mail + mate

Best wishes,
Daniel Auth



-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64
 (x86_64)

Kernel: Linux 4.9.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages mate-desktop-environment depends on:
ii  mate-desktop-environment-core  1.16.0+1

Versions of packages mate-desktop-environment recommends:
ii  atril                     1.16.1-2
ii  desktop-base              9.0.2
ii  engrampa                  1.16.0-2
ii  eom                       1.16.0-2
ii  ffmpegthumbnailer         2.1.1-0.1+b3
ii  galculator                2.1.4-1+b1
ii  mate-applets              1.16.0-1
ii  mate-icon-theme-faenza    1.16.0+dfsg1-2
ii  mate-media                1.16.0-1
ii  mate-notification-daemon  1.16.1-1
ii  mate-power-manager        1.16.2-1
ii  mate-screensaver          1.16.1-1
ii  mate-system-monitor       1.16.0-2
ii  mate-user-guide           1.16.0-1
ii  mate-utils                1.16.0-1
ii  pluma                     1.16.1-1

Versions of packages mate-desktop-environment suggests:
ii  network-manager-gnome      1.4.4-1
ii  sylpheed [mail-reader]     3.5.1-2+b1
pn  x-www-browser | iceweasel  <none>

-- no debconf information