Paper/patches/server/0773-Fix-Entity-Position-Desync.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
Date: Thu, 23 Dec 2021 23:59:12 -0500
Subject: [PATCH] Fix Entity Position Desync

If entities were teleported in the first tick it would not be send to the client.

This excludes hanging entities, as this fix caused problematic behavior due to them having their own
position field.

diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
index 0cbb5dd17c5b37ad90ce11a31b64470722026d06..9d5d32705f9d8aadb51019f17b4db76a9bc6a04b 100644
--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
+++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
@@ -171,7 +171,7 @@ public class ServerEntity {
                 boolean flag4 = false;
                 boolean flag5 = false;
 
-                if (this.tickCount > 0 || this.entity instanceof AbstractArrow) {
+                if (!(this.entity instanceof net.minecraft.world.entity.decoration.HangingEntity) || this.tickCount > 0 || this.entity instanceof AbstractArrow) { // Paper - Always update position
                     long k = this.positionCodec.encodeX(vec3d);
                     long l = this.positionCodec.encodeY(vec3d);
                     long i1 = this.positionCodec.encodeZ(vec3d);