Focus "mouse" or "sloppy" do the same thing on gnome-shell

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http://unix.stackexchange.com – My problem is actually very anoing. I very familiar with the mouse focus but right now It's not working. On thisgnome-tweak-tool the last option "windows" have the "windows focus mode" switch, im set it on "mouse" but it does not work. It acts like "sloppy" option. Hope another gnome user understand my issues. (HowTos)