From f3db5ea48341575565611982d87767cf980f2c7b Mon Sep 17 00:00:00 2001
From: Jsinco <jonah@jsinco.dev>
Date: Sun, 28 Jun 2026 22:22:08 -0400
Subject: [PATCH] Fix MC-307918

---
 .../net/minecraft/world/level/block/SculkBlock.java.patch | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/paper-server/patches/sources/net/minecraft/world/level/block/SculkBlock.java.patch b/paper-server/patches/sources/net/minecraft/world/level/block/SculkBlock.java.patch
index 866bae4bf2d9..f4289c5fdd99 100644
--- a/paper-server/patches/sources/net/minecraft/world/level/block/SculkBlock.java.patch
+++ b/paper-server/patches/sources/net/minecraft/world/level/block/SculkBlock.java.patch
@@ -11,3 +11,11 @@
                  }
  
                  return Math.max(0, charge - xpPerGrowthSpawn);
+@@ -84,6 +_,7 @@
+             int growthCount = 0;
+ 
+             for (BlockPos blockPos : BlockPos.betweenClosed(pos.offset(-4, 0, -4), pos.offset(4, 2, 4))) {
++                if (level instanceof net.minecraft.server.level.WorldGenRegion worldGenRegion && !worldGenRegion.isWithinWriteZone(blockPos)) continue; // Paper - Fix MC-307918
+                 BlockState state = level.getBlockState(blockPos);
+                 if (state.is(Blocks.SCULK_SENSOR) || state.is(Blocks.SCULK_SHRIEKER)) {
+                     growthCount++;