diff --git a/paper-server/patches/sources/net/minecraft/core/cauldron/CauldronInteraction.java.patch b/paper-server/patches/sources/net/minecraft/core/cauldron/CauldronInteraction.java.patch
index f3dd315d56..864d32c207 100644
--- a/paper-server/patches/sources/net/minecraft/core/cauldron/CauldronInteraction.java.patch
+++ b/paper-server/patches/sources/net/minecraft/core/cauldron/CauldronInteraction.java.patch
@@ -31,7 +31,7 @@
              if (potioncontents != null && potioncontents.is(Potions.WATER)) {
                  if (!world.isClientSide) {
 +                    // CraftBukkit start
-+                    if (!LayeredCauldronBlock.changeLevel(iblockdata, world, blockposition, Blocks.WATER_CAULDRON.defaultBlockState(), entityhuman, CauldronLevelChangeEvent.ChangeReason.BOTTLE_EMPTY)) {
++                    if (!LayeredCauldronBlock.changeLevel(iblockdata, world, blockposition, Blocks.WATER_CAULDRON.defaultBlockState(), entityhuman, CauldronLevelChangeEvent.ChangeReason.BOTTLE_EMPTY, false)) { // Paper - Call CauldronLevelChangeEvent
 +                        return InteractionResult.SUCCESS;
 +                    }
 +                    // CraftBukkit end
@@ -69,7 +69,7 @@
                  if (potioncontents != null && potioncontents.is(Potions.WATER)) {
                      if (!world.isClientSide) {
 +                        // CraftBukkit start
-+                        if (!LayeredCauldronBlock.changeLevel(iblockdata, world, blockposition, iblockdata.cycle(LayeredCauldronBlock.LEVEL), entityhuman, CauldronLevelChangeEvent.ChangeReason.BOTTLE_EMPTY)) {
++                        if (!LayeredCauldronBlock.changeLevel(iblockdata, world, blockposition, iblockdata.cycle(LayeredCauldronBlock.LEVEL), entityhuman, CauldronLevelChangeEvent.ChangeReason.BOTTLE_EMPTY, false)) { // Paper - Call CauldronLevelChangeEvent
 +                            return InteractionResult.SUCCESS;
 +                        }
 +                        // CraftBukkit end
@@ -86,7 +86,7 @@
          } else {
              if (!world.isClientSide) {
 +                // CraftBukkit start
-+                if (!LayeredCauldronBlock.changeLevel(state, world, pos, Blocks.CAULDRON.defaultBlockState(), player, CauldronLevelChangeEvent.ChangeReason.BUCKET_FILL)) {
++                if (!LayeredCauldronBlock.changeLevel(state, world, pos, Blocks.CAULDRON.defaultBlockState(), player, CauldronLevelChangeEvent.ChangeReason.BUCKET_FILL, false)) { // Paper - Call CauldronLevelChangeEvent
 +                    return InteractionResult.SUCCESS;
 +                }
 +                // CraftBukkit end
@@ -105,7 +105,7 @@
      static InteractionResult emptyBucket(Level world, BlockPos pos, Player player, InteractionHand hand, ItemStack stack, BlockState state, SoundEvent soundEvent) {
          if (!world.isClientSide) {
 +            // CraftBukkit start
-+            if (!LayeredCauldronBlock.changeLevel(state, world, pos, state, player, CauldronLevelChangeEvent.ChangeReason.BUCKET_EMPTY)) {
++            if (!LayeredCauldronBlock.changeLevel(state, world, pos, state, player, CauldronLevelChangeEvent.ChangeReason.BUCKET_EMPTY, false)) { // Paper - Call CauldronLevelChangeEvent
 +                return InteractionResult.SUCCESS;
 +            }
 +            // CraftBukkit end
diff --git a/paper-server/patches/sources/net/minecraft/world/level/block/CauldronBlock.java.patch b/paper-server/patches/sources/net/minecraft/world/level/block/CauldronBlock.java.patch
index f53d59cc95..0d9def53a1 100644
--- a/paper-server/patches/sources/net/minecraft/world/level/block/CauldronBlock.java.patch
+++ b/paper-server/patches/sources/net/minecraft/world/level/block/CauldronBlock.java.patch
@@ -10,19 +10,47 @@
  
  public class CauldronBlock extends AbstractCauldronBlock {
  
-@@ -62,13 +65,11 @@
+@@ -41,9 +44,19 @@
+     public void handlePrecipitation(BlockState state, Level world, BlockPos pos, Biome.Precipitation precipitation) {
+         if (CauldronBlock.shouldHandlePrecipitation(world, precipitation)) {
+             if (precipitation == Biome.Precipitation.RAIN) {
++                // Paper start - Call CauldronLevelChangeEvent
++                if (!LayeredCauldronBlock.changeLevel(state, world, pos, Blocks.WATER_CAULDRON.defaultBlockState(), null, CauldronLevelChangeEvent.ChangeReason.NATURAL_FILL, false)) { // avoid duplicate game event
++                    return;
++                }
++                // Paper end - Call CauldronLevelChangeEvent
+                 world.setBlockAndUpdate(pos, Blocks.WATER_CAULDRON.defaultBlockState());
+                 world.gameEvent((Entity) null, (Holder) GameEvent.BLOCK_CHANGE, pos);
+             } else if (precipitation == Biome.Precipitation.SNOW) {
++                // Paper start - Call CauldronLevelChangeEvent
++                if (!LayeredCauldronBlock.changeLevel(state, world, pos, Blocks.POWDER_SNOW_CAULDRON.defaultBlockState(), null, CauldronLevelChangeEvent.ChangeReason.NATURAL_FILL, false)) { // avoid duplicate game event
++                    return;
++                }
++                // Paper end - Call CauldronLevelChangeEvent
+                 world.setBlockAndUpdate(pos, Blocks.POWDER_SNOW_CAULDRON.defaultBlockState());
+                 world.gameEvent((Entity) null, (Holder) GameEvent.BLOCK_CHANGE, pos);
+             }
+@@ -62,13 +75,19 @@
  
          if (fluid == Fluids.WATER) {
              iblockdata1 = Blocks.WATER_CAULDRON.defaultBlockState();
 -            world.setBlockAndUpdate(pos, iblockdata1);
 -            world.gameEvent((Holder) GameEvent.BLOCK_CHANGE, pos, GameEvent.Context.of(iblockdata1));
-+            LayeredCauldronBlock.changeLevel(state, world, pos, iblockdata1, null, CauldronLevelChangeEvent.ChangeReason.NATURAL_FILL); // CraftBukkit
++            // Paper start - Call CauldronLevelChangeEvent; don't send level event or game event if cancelled
++            if (!LayeredCauldronBlock.changeLevel(state, world, pos, iblockdata1, null, CauldronLevelChangeEvent.ChangeReason.NATURAL_FILL)) { // CraftBukkit
++                return;
++            }
++            // Paper end - Call CauldronLevelChangeEvent
              world.levelEvent(1047, pos, 0);
          } else if (fluid == Fluids.LAVA) {
              iblockdata1 = Blocks.LAVA_CAULDRON.defaultBlockState();
 -            world.setBlockAndUpdate(pos, iblockdata1);
 -            world.gameEvent((Holder) GameEvent.BLOCK_CHANGE, pos, GameEvent.Context.of(iblockdata1));
-+            LayeredCauldronBlock.changeLevel(state, world, pos, iblockdata1, null, CauldronLevelChangeEvent.ChangeReason.NATURAL_FILL); // CraftBukkit
++            // Paper start - Call CauldronLevelChangeEvent; don't send level event or game event if cancelled
++            if (!LayeredCauldronBlock.changeLevel(state, world, pos, iblockdata1, null, CauldronLevelChangeEvent.ChangeReason.NATURAL_FILL)) { // CraftBukkit
++                return;
++            }
++            // Paper end - Call CauldronLevelChangeEvent
              world.levelEvent(1046, pos, 0);
          }
  
diff --git a/paper-server/patches/sources/net/minecraft/world/level/block/LayeredCauldronBlock.java.patch b/paper-server/patches/sources/net/minecraft/world/level/block/LayeredCauldronBlock.java.patch
index fb08b3638d..183eacd5ca 100644
--- a/paper-server/patches/sources/net/minecraft/world/level/block/LayeredCauldronBlock.java.patch
+++ b/paper-server/patches/sources/net/minecraft/world/level/block/LayeredCauldronBlock.java.patch
@@ -12,7 +12,7 @@
  
  public class LayeredCauldronBlock extends AbstractCauldronBlock {
  
-@@ -62,41 +67,70 @@
+@@ -62,41 +67,76 @@
  
      @Override
      protected void entityInside(BlockState state, Level world, BlockPos pos, Entity entity) {
@@ -65,7 +65,13 @@
      }
  
 +    // CraftBukkit start
-+    public static boolean changeLevel(BlockState iblockdata, Level world, BlockPos blockposition, BlockState newBlock, Entity entity, CauldronLevelChangeEvent.ChangeReason reason) {
++    // Paper start - Call CauldronLevelChangeEvent
++    public static boolean changeLevel(BlockState iblockdata, Level world, BlockPos blockposition, BlockState newBlock, @javax.annotation.Nullable Entity entity, CauldronLevelChangeEvent.ChangeReason reason) { // Paper - entity is nullable
++        return changeLevel(iblockdata, world, blockposition, newBlock, entity, reason, true);
++    }
++
++    public static boolean changeLevel(BlockState iblockdata, Level world, BlockPos blockposition, BlockState newBlock, @javax.annotation.Nullable Entity entity, CauldronLevelChangeEvent.ChangeReason reason, boolean sendGameEvent) { // Paper - entity is nullable
++    // Paper end - Call CauldronLevelChangeEvent
 +        CraftBlockState newState = CraftBlockStates.getBlockState(world, blockposition);
 +        newState.setData(newBlock);
 +
@@ -78,7 +84,7 @@
 +            return false;
 +        }
 +        newState.update(true);
-+        world.gameEvent((Holder) GameEvent.BLOCK_CHANGE, blockposition, GameEvent.Context.of(newBlock));
++        if (sendGameEvent) world.gameEvent((Holder) GameEvent.BLOCK_CHANGE, blockposition, GameEvent.Context.of(newBlock)); // Paper - Call CauldronLevelChangeEvent
 +        return true;
 +    }
 +    // CraftBukkit end
@@ -94,7 +100,7 @@
          }
      }
  
-@@ -115,8 +149,11 @@
+@@ -115,8 +155,11 @@
          if (!this.isFull(state)) {
              BlockState iblockdata1 = (BlockState) state.setValue(LayeredCauldronBlock.LEVEL, (Integer) state.getValue(LayeredCauldronBlock.LEVEL) + 1);