It only affects the human gtk themes (Human and Human-Clearlooks), other gtk themes besides high-contrast still has application icons in their window menus.
As a Human theme user I actually like this particular change, it cleans up the window title bar. The application icon can already be seen in the window list in the panels and the alt-tab dialog.
@Yann
The application icon for the window menu button was removed following this bug report -
https:/ /bugs.launchpad .net/human- gtk-theme/ +bug/405426
It only affects the human gtk themes (Human and Human-Clearlooks), other gtk themes besides high-contrast still has application icons in their window menus.
As a Human theme user I actually like this particular change, it cleans up the window title bar. The application icon can already be seen in the window list in the panels and the alt-tab dialog.