In order for it to go away, I have to move my mouse again, but as soon as I go into the inventory or open the map, the mouse pointer reappears in the image.
In an emergency, just pull the mouse out briefly while playing with the controller
Use the touchpad
Can usually be made out. Have to look at your keyboard. Is mostly Fn + F5 or Fn + F7
Not old? Because that doesn't work
Is a bug, will work again with the next update.