You have install unclutter but not configure it!
start a ssh session, log in to you pi an type following command:
sudo nano /home/pi/.config/lxsession/LXDE-pi/autostart
The entries of this file begins wit an @ for program’s witch are started by a GUI
@xscreensaver -no-splash
@xset s off
@xset -dpms
@xset s noblank
@unclutter
After saving this, restart your pi an check the status of you mouse cursor.