PaperMC/paper-server/nms-patches/net/minecraft/world/entity/animal/EntityChicken.patch

--- a/net/minecraft/world/entity/animal/EntityChicken.java
+++ b/net/minecraft/world/entity/animal/EntityChicken.java
@@ -75,6 +75,11 @@
 
     @Override
     public void movementTick() {
+        // CraftBukkit start
+        if (this.isChickenJockey()) {
+            this.persistenceRequired = !this.isTypeNotPersistent(0);
+        }
+        // CraftBukkit end
         super.movementTick();
         this.oFlap = this.flap;
         this.oFlapSpeed = this.flapSpeed;
@@ -94,7 +99,9 @@
         this.flap += this.flapping * 2.0F;
         if (!this.level.isClientSide && this.isAlive() && !this.isBaby() && !this.isChickenJockey() && --this.eggTime <= 0) {
             this.playSound(SoundEffects.CHICKEN_EGG, 1.0F, (this.random.nextFloat() - this.random.nextFloat()) * 0.2F + 1.0F);
+            this.forceDrops = true; // CraftBukkit
             this.a((IMaterial) Items.EGG);
+            this.forceDrops = false; // CraftBukkit
             this.eggTime = this.random.nextInt(6000) + 6000;
         }