craftbukkit/nms-patches/net/minecraft/world/entity/IEntityAngerable.patch

--- a/net/minecraft/world/entity/IEntityAngerable.java
+++ b/net/minecraft/world/entity/IEntityAngerable.java
@@ -9,6 +9,10 @@
 import net.minecraft.world.level.GameRules;
 import net.minecraft.world.level.World;
 
+// CraftBukkit start
+import org.bukkit.event.entity.EntityTargetEvent;
+// CraftBukkit end
+
 public interface IEntityAngerable {
 
     String TAG_ANGER_TIME = "AngerTime";
@@ -48,14 +52,14 @@
                     if (entity instanceof EntityInsentient) {
                         EntityInsentient entityinsentient = (EntityInsentient) entity;
 
-                        this.setTarget(entityinsentient);
+                        this.setTarget(entityinsentient, EntityTargetEvent.TargetReason.UNKNOWN, false); // CraftBukkit
                         this.setLastHurtByMob(entityinsentient);
                     }
 
                     if (entity instanceof EntityHuman) {
                         EntityHuman entityhuman = (EntityHuman) entity;
 
-                        this.setTarget(entityhuman);
+                        this.setTarget(entityhuman, EntityTargetEvent.TargetReason.UNKNOWN, false); // CraftBukkit
                         this.setLastHurtByPlayer(entityhuman);
                     }
 
@@ -114,7 +118,7 @@
     default void stopBeingAngry() {
         this.setLastHurtByMob((EntityLiving) null);
         this.setPersistentAngerTarget((UUID) null);
-        this.setTarget((EntityLiving) null);
+        this.setTarget((EntityLiving) null, org.bukkit.event.entity.EntityTargetEvent.TargetReason.FORGOT_TARGET, true); // CraftBukkit
         this.setRemainingPersistentAngerTime(0);
     }
 
@@ -127,6 +131,8 @@
 
     void setTarget(@Nullable EntityLiving entityliving);
 
+    boolean setTarget(@Nullable EntityLiving entityliving, org.bukkit.event.entity.EntityTargetEvent.TargetReason reason, boolean fireEvent); // CraftBukkit
+
     boolean canAttack(EntityLiving entityliving);
 
     @Nullable