Hello
Well, because is crhomium you will be on a linux system.
So after a little search this can be remove from some setting on the chormium. Is not just a clik,
So for those who want to run a automated script that start the chormium using kiosk mode well this will be a help for them.
Before you start the chromium with –kiosk just add one more line
sed -i 's/"exited_cleanly": false/"exited_cleanly": true/' ~/.config/chromium/Default/Preferences