To make 's' working I had to change org.gnome.desktop.wm.keybindings:activate-binding-menu in dconf-editor from ['<Alt>space'] to [] in addition to changes suggested in #21.
To make 's' working I had to change org.gnome. desktop. wm.keybindings: activate- binding- menu in dconf-editor from ['<Alt>space'] to [] in addition to changes suggested in #21.