Comment 9 for bug 1476736

Let me comment here, instead of commenting on duplicate bug, due to it more related to XFCE and other apps (themes). So, looking at good news on bug #1294699, i test my previously reported apps and found that some was fortunately fixed so far.
Looks like fixed and no show this bug any more:
$ libreoffice --version
LibreOffice 4.2.8.2 420m0(Build:2)

$ gimp --version
GNU Image Manipulation Program version 2.8.10

$ firefox --version
Mozilla Firefox 47.0

and still not fixed:
$ thunderbird --version
(process:10726): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed
 Thunderbird 38.8.0

My current OS
$ uname -a
Linux test-ssd 3.19.0-64-generic #72~14.04.1-Ubuntu SMP Fri Jun 24 18:00:49 UTC 2016 i686 i686 i686 GNU/Linux
$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.4 LTS"

THANKS!