PaperMC/Spigot-Server-Patches/0426-Don-t-tick-dead-players.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 2 Apr 2020 17:16:48 -0400
Subject: [PATCH] Don't tick dead players

Causes sync chunk loads and who knows what all else.
This is safe because Spectators are skipped in unloaded chunks too in vanilla.

diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
index e60dac038e8a414a45f8dab465d722ee3fb5ef54..cfccab0b33dfa387fdab09ad51d518d42b1b5775 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -480,7 +480,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
 
     public void playerTick() {
         try {
-            if (!this.isSpectator() || this.world.isLoaded(this.getChunkCoordinates())) {
+            if (valid && !this.isSpectator() || this.world.isLoaded(this.getChunkCoordinates())) { // Paper - don't tick dead players that are not in the world currently (pending respawn)
                 super.tick();
             }