craftbukkit/nms-patches/net/minecraft/world/entity/animal/EntitySnowman.patch

--- a/net/minecraft/world/entity/animal/EntitySnowman.java
+++ b/net/minecraft/world/entity/animal/EntitySnowman.java
@@ -43,6 +43,10 @@
 import net.minecraft.world.level.storage.loot.LootTables;
 import net.minecraft.world.phys.Vec3D;
 
+// CraftBukkit start
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+// CraftBukkit end
+
 public class EntitySnowman extends EntityGolem implements IShearable, IRangedEntity {
 
     private static final DataWatcherObject<Byte> DATA_PUMPKIN_ID = DataWatcher.defineId(EntitySnowman.class, DataWatcherRegistry.BYTE);
@@ -100,7 +104,7 @@
 
         if (world instanceof WorldServer worldserver) {
             if (this.level().getBiome(this.blockPosition()).is(BiomeTags.SNOW_GOLEM_MELTS)) {
-                this.hurtServer(worldserver, this.damageSources().onFire(), 1.0F);
+                this.hurtServer(worldserver, this.damageSources().melting(), 1.0F); // CraftBukkit - DamageSources.ON_FIRE -> CraftEventFactory.MELTING
             }
 
             if (!worldserver.getGameRules().getBoolean(GameRules.RULE_MOBGRIEFING)) {
@@ -116,7 +120,11 @@
                 BlockPosition blockposition = new BlockPosition(j, k, l);
 
                 if (this.level().getBlockState(blockposition).isAir() && iblockdata.canSurvive(this.level(), blockposition)) {
-                    this.level().setBlockAndUpdate(blockposition, iblockdata);
+                    // CraftBukkit start
+                    if (!CraftEventFactory.handleBlockFormEvent(this.level(), blockposition, iblockdata, this)) {
+                        continue;
+                    }
+                    // CraftBukkit end
                     this.level().gameEvent((Holder) GameEvent.BLOCK_PLACE, blockposition, GameEvent.a.of(this, iblockdata));
                 }
             }
@@ -153,6 +161,11 @@
             if (world instanceof WorldServer) {
                 WorldServer worldserver = (WorldServer) world;
 
+                // CraftBukkit start
+                if (!CraftEventFactory.handlePlayerShearEntityEvent(entityhuman, this, itemstack, enumhand)) {
+                    return EnumInteractionResult.PASS;
+                }
+                // CraftBukkit end
                 this.shear(worldserver, SoundCategory.PLAYERS, itemstack);
                 this.gameEvent(GameEvent.SHEAR, entityhuman);
                 itemstack.hurtAndBreak(1, entityhuman, getSlotForHand(enumhand));
@@ -169,7 +182,9 @@
         worldserver.playSound((EntityHuman) null, (Entity) this, SoundEffects.SNOW_GOLEM_SHEAR, soundcategory, 1.0F, 1.0F);
         this.setPumpkin(false);
         this.dropFromShearingLootTable(worldserver, LootTables.SHEAR_SNOW_GOLEM, itemstack, (worldserver1, itemstack1) -> {
+            this.forceDrops = true; // CraftBukkit
             this.spawnAtLocation(worldserver1, itemstack1, this.getEyeHeight());
+            this.forceDrops = false; // CraftBukkit
         });
     }