gnome-terminal ignores the command line options --name and --class

Ubuntu version:

Description: Ubuntu 15.04
Release: 15.04

Package version:

gnome-terminal:
  Installed: 3.14.2-0ubuntu3
  Candidate: 3.14.2-0ubuntu3
  Version table:
 *** 3.14.2-0ubuntu3 0
        500 http://mirrors.coopvgg.com.ar/ubuntu/ vivid/main amd64 Packages
        100 /var/lib/dpkg/status

Description:

gnome-terminal ignores the command line options --name and --class.
These options are listed with gnome-terminal --help as general gtk+
options. They should set the WM_CLASS property of the terminal window,
so window managers can manage properties of individual windows separately.

The WM_CLASS property can be displayed with the xprop command.

Example:

# gnome-terminal &
# xprop WM_CLASS
(point the cursor on the terminal window)
WM_CLASS(STRING) = "gnome-terminal-server", "Gnome-terminal"

# gnome-terminal --disable-factory --name foo --class bar &
# xprop WM_CLASS
WM_CLASS(STRING) = "gnome-terminal-server", "Gnome-terminal"

Here is how it should be:

# gnome-terminal &
# xprop WM_CLASS
WM_CLASS(STRING) = "gnome-terminal-server", "Gnome-terminal"

#gnome-terminal --disable-factory --class foo --name bar
# xprop WM_CLASS
WM_CLASS(STRING) = "bar", "foo"