World Rugby has issued another clarification. This addresses kicking the ball out of the hands of another player. That has always been specifically prohibited when a player is attempting to touch the ball down for a try, but it was not addressed for more general situations. This clarification makes it clear – that action is illegal and dangerous and should be penalized. https://www.youtube.com/watch?v=4mONaLz6Ry4&feature=youtu.be
The full clarification can be read at Clarification 1016