"player was knocked into the void by player" doesn't appear

WHAT I EXPECTED TO HAPPEN: in chat it would say "chilbree was knocked into the void by wilbree2"

WHAT HAPPENED: it said "chilbree fell out of the world"

STEPS TO REPRODUCE;

1. Make a hole to the void
2. Get a player or mob to knock you down the hole
3. See "player fell out of the world"