toggle-shaded not working as it should

[sandro]

Dear admins, please feel free to move this report to the appropriate place in case. I was waiting for someone who knows how to file a bug report to do it, but after half a year I give up waiting.

Problem is that when you toggle-shaded, defaulting to 'Ctrl-Alt-s' in dconf (org.gnome.desktop.wm.keybindings) or to double-click top-bar on a window the window just disappears instead of showing you only the top bar. Additionally it is impossible for me to get the disappeared window back, for example via alt-tab.

Remark: toggle-shaded behaves like this only since I upgraded to trusty (14.04).