Player Teleport/Movement Bug

[Poswn]

Expected Behavior

Teleporting a player to a location with yaw & pitch values passed in will set the player's yaw & pitch to the defined values no matter what.

Actual Behavior

If you teleport a player to a location whilst they are moving such as falling, the yaw & pitch will be incorrect at their teleport location (x, y, & z coordinates are correct).

Steps to Reproduce

Teleport a player to a location whilst they are moving such as falling using code below. If the player isn't moving the yaw & pitch will be correct at the teleport location.

public void teleportToSpawn(Player player) {
    player.teleport(new Location(
            0, // X-Coordinate
            50, // Y-Coordinate
            0, // Z-Coordinate
            90, // Yaw
            0)); // Pitch
}

Debug information

• Debug link: Didn't work, got error running command. You can view error here.
• Timings link (if relevant): N/A

Checklist:

• [] I included a /debugpaste link
• I made sure there aren't duplicates of this report (Use Search)
• I made sure I am using an up-to-date version of Nukkit
• I Made sure the bug/error is not caused by a plugin

[Poswn]

I'm using the latest version of Nukkit at the time of this issue opened, commit 90cd601 of the master branch.

[Poswn]

If you want to test this easily, you can fly high up in air, drop & whilst falling say something random in chat to run the method to teleport you, you can change the x, y or z values in the teleportToSpawn method so that there is a block under your feet when you teleport.

@EventHandler
public void onPlayerChat(PlayerChatEvent event) {
    teleportToSpawn(event.getPlayer());
}

public void teleportToSpawn(Player player) {
    player.teleport(new Location(
            0, // X-Coordinate
            50, // Y-Coordinate
            0, // Z-Coordinate
            90, // Yaw
            0)); // Pitch
}

[Poswn]

Not sure but this issue from Pocketmine may be possibly related or not.
https://github.com/pmmp/PocketMine-MP/issues/821