@Goldfishwars "However, lifters must immediately and safely lower the player to the ground as soon as the ball is won by either team. Leaving a player suspended in the air to induce a collision is an offense punishable by a free-kick."
According to World Rugby, it is illegal.
@theXstitchbitch Regardless of my nationality, Kane deliberately drags his foot to induce contact.
On the other hand, the keeper misses the ball.
If it was called a pen on the pitch, it would remain that way. It was called no pen on the pitch and there isn't sufficient evidence to overturn it.