From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 10 Mar 2018 16:33:15 -0500
Subject: [PATCH] Prevent Frosted Ice from loading/holding chunks

1.17: Shouldn't be needed as blocks no longer tick without at least 1 radius chunk loaded.

diff --git a/src/main/java/net/minecraft/world/level/block/FrostedIceBlock.java b/src/main/java/net/minecraft/world/level/block/FrostedIceBlock.java
index 0d08a9d5555ebc296a1461aefbf48e8eee6b462d..7f1946d371f9be2662788957c6f11a2e087df616 100644
--- a/src/main/java/net/minecraft/world/level/block/FrostedIceBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/FrostedIceBlock.java
@@ -46,7 +46,8 @@ public class FrostedIceBlock extends IceBlock {
 
             for(Direction direction : Direction.values()) {
                 mutableBlockPos.setWithOffset(pos, direction);
-                BlockState blockState = world.getBlockState(mutableBlockPos);
+                BlockState blockState = world.getBlockStateIfLoaded(mutableBlockPos); // Paper
+                if (blockState == null) { continue; } // Paper
                 if (blockState.is(this) && !this.slightlyMelt(blockState, world, mutableBlockPos)) {
                     world.scheduleTick(mutableBlockPos, this, Mth.nextInt(random, world.paperConfig().environment.frostedIce.delay.min, world.paperConfig().environment.frostedIce.delay.max)); // Paper - use configurable min/max delay
                 }
@@ -83,7 +84,10 @@ public class FrostedIceBlock extends IceBlock {
 
         for(Direction direction : Direction.values()) {
             mutableBlockPos.setWithOffset(pos, direction);
-            if (world.getBlockState(mutableBlockPos).is(this)) {
+            // Paper start
+            BlockState blockState = world.getBlockStateIfLoaded(mutableBlockPos);
+            if (blockState != null && blockState.is(this)) {
+                // Paper end
                 ++i;
                 if (i >= maxNeighbors) {
                     return false;