PaperMC/nms-patches/EntityShulkerBullet.patch

--- a/net/minecraft/server/EntityShulkerBullet.java
+++ b/net/minecraft/server/EntityShulkerBullet.java
@@ -34,8 +34,21 @@
         this.target = entity;
         this.dir = EnumDirection.UP;
         this.a(enumdirection_enumaxis);
+        projectileSource = (org.bukkit.entity.LivingEntity) entityliving.getBukkitEntity(); // CraftBukkit
     }
 
+    // CraftBukkit start
+    public Entity getTarget() {
+        return this.target;
+    }
+
+    public void setTarget(Entity e) {
+        this.target = e;
+        this.dir = EnumDirection.UP;
+        this.a(EnumDirection.EnumAxis.X);
+    }
+    // CraftBukkit end
+
     @Override
     public SoundCategory getSoundCategory() {
         return SoundCategory.HOSTILE;
@@ -255,7 +268,7 @@
         if (flag) {
             this.a(entityliving, entity);
             if (entity instanceof EntityLiving) {
-                ((EntityLiving) entity).addEffect(new MobEffect(MobEffects.LEVITATION, 200));
+                ((EntityLiving) entity).addEffect(new MobEffect(MobEffects.LEVITATION, 200), org.bukkit.event.entity.EntityPotionEffectEvent.Cause.ATTACK); // CraftBukkit
             }
         }