Bug#862355: mate-settings-daemon: Can't change wallpaper when selecting one

[Ivan.pozderovic]

+1 for the problems Tycho reported:
- black desktop background with visible panels and icons
- some buttons appear pure white, without any label (for an example, buttons in Chromium notification bar)

Problem appeared after a package upgrade recently which upgraded mate-settings-daemon (among others):
mate-settings-daemon: 1.16.0-2 to 1.16.2-1
mate-settings-daemon-common: 1.16.0-2 to 1.16.2-1

Running the same system as OP:
-- System Information:
Debian Release: 9.0
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64
(x86_64)

Debian Stretch is officially frozen since 5.2.2017:
https://lists.debian.org/debian-devel-announce/2017/02/msg00001.html

mate-settings-daemon 1.16.2-1 packages are in the Stretch repo since 28.4.2017.

Current package versions in BOTH Stretch and Sid (27.5.2017.):
mate-desktop: 1.16.1-1
caja: 1.16.2-2

According to upstream, problem is solved in mate-desktop 1.16.2 and caja 1.16.3.

@Dear Maintainer, please build new versions of mentioned packages and deploy them to unstable, so they can reach the Debian 9 release on 17.6.2017. Or, alternatively rollback older versions?
Thanks!

Comment on the severity: Taking into consideration Stretch release date and user experience perspective, I would call this bug critical, since having a static black background with glitched buttons in some software is not what a user would expect from a desktop environment in a stable release.

Reference from the upstream change log:
+mate-desktop 1.16.2
+
+ * Background: fix crossfade issues with recent GTK+3 versions
+ * Background: fix more graphics issues to allow Caja to use background for directory windows in GTK+3 build
+ * Background: fix memleaks and other misc issues

--
Ivan
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