The bug

Placing a flower in a flower pot or changing the flower to a different type does not send the correct update packets for near by players.

To reproduce

1. Have two players in the world next to each other
2. Have one player place a flower pot in the world
3. Have the same player that placed the flower pot, place a flower into the pot.
4. The other player will not be able to see this flower. If this player right clicks the pot to remove the flower (even though they can see it) they will get the correct flower in their hand.

The same bug happens when trying to change the flower to a different one. The correct flower doesn't show for the other player.

Note: If a grass block or another block is broken nearby it, it will immediately update the flower pot