From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Tue, 21 Dec 2021 16:28:17 -0800
Subject: [PATCH] Fix fluid-logging on Block#breakNaturally

Leaves fluid if the block broken was fluid-logged which is what
happens if a player breaks a fluid-logged block

diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
index bf7d216d9307a96005dcca64696af72a84a68716..5ea2fdbd2c762e0e632093fc07294327eb061ada 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
@@ -502,6 +502,7 @@ public class CraftBlock implements Block {
         net.minecraft.world.level.block.state.BlockState iblockdata = this.getNMS();
         net.minecraft.world.level.block.Block block = iblockdata.getBlock();
         net.minecraft.world.item.ItemStack nmsItem = CraftItemStack.asNMSCopy(item);
+        net.minecraft.world.level.material.FluidState fluidState = this.world.getFluidState(this.position); // Paper
         boolean result = false;
 
         // Modelled off EntityHuman#hasBlock
@@ -512,7 +513,7 @@ public class CraftBlock implements Block {
         }
 
         // SPIGOT-6778: Directly call setBlock instead of setTypeAndData, so that the tile entiy is not removed and custom remove logic is run.
-        return this.world.setBlock(position, Blocks.AIR.defaultBlockState(), 3) && result;
+        return this.world.setBlock(position, fluidState.createLegacyBlock(), 3) && result; // Paper - leave liquid if waterlogged
     }
 
     @Override