I have experienced the same problem on Gnome and I have found that after installing compiz-settings-manager and enabling "Gnome Compatibility" (found on the Workarounds category). The keyboard shortcuts work. Hope this helps!
I have experienced the same problem on Gnome and I have found that after installing compiz- settings- manager and enabling "Gnome Compatibility" (found on the Workarounds category). The keyboard shortcuts work. Hope this helps!