I'm not sure if this can be resolved but I want to have it documented
nevertheless.

Certain Gnome/Gtk (3) applications cannot be used seriously anymore outside of
the Gnome environment when they are using CSD.

In my case this is extremely annoying in case of PDF viewers. I'm running on
WindowMaker in that case and my default pdf viewer so far was evince. In
openSUSE 13.2 evince is using CSD and therefore the window cannot be resized
anymore under WindowMaker. The required WM decorations just don't exist.

Given the strategy of openSUSE to provide choice and former actions to drop
old-style X applications in favour of KDE and Gnome apps this is rather
annoying if half of the apps cannot be used anymore.

The "Internet" suggests that window managers can be fixed/patched to make it
possible to work with CSD enabled applications nevertheless.