Reported at: http://mail.openjdk.java.net/pipermail/awt-dev/2013-September/005418.html
With recent versions of GNOME shell, GNOME shell sets the _NET_WM_NAME
to "GNOME Shell" instead of mutter. It's still mutter that's running,
but with a different _NET_WM_NAME.
The following webrev makes OpenJDK compatible with these newer versions:
noreg-hard: to test this fix one should be running the Gnome Shell window manager (Gnome 3). Running existing AWT regression tests for the Insets, Window, Frame, and Dialog areas is enough to verify this fix.
Date: 2013-10-01 17:37:37 +0000