Bug#770512: mutter: Tiled windows using client side decoration have no borders

[Martin Tang]

Source: mutter
Severity: normal

Dear Maintainer,

Over the last few GNOME releases, more and more applications have started using
client side decoration. When these applications are quick tiled to the left or
to the right, they lack any borders, and it can be hard to see where one window
ends and another begins. Previously, tiled applications had a thin 1 pixel border
(and a drop shadow if only one visible window is tiled).

Attached below are two screenshots, one showing a tiled window using CSD and
having no borders, and a second showing a tiled window with the old behavior.

-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_CA.utf8, LC_CTYPE=en_CA.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
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