The Bug:

Sculk sensors are not activated upon chickens laying eggs.

Steps to Reproduce:

• Place down a sculk sensor.
• Summon a chicken that will immediately lay an egg nearby.

• /summon minecraft:chicken ~ ~ ~ {NoAI:1b,EggLayTime:1}

• Take note as to whether or not sculk sensors are activated upon chickens laying eggs.

Observed Behavior:

Sculk sensors are not activated upon chickens laying eggs.

Expected Behavior:

Sculk sensors would be activated upon chickens laying eggs.

Code Analysis:

Code analysis by Avoma can be found below.

The following is based on a decompiled version of Minecraft 1.18.2 using MCP-Reborn.

public class Chicken extends Animal {
   ...
   public void aiStep() {
      super.aiStep();
      ...
      if (!this.level.isClientSide && this.isAlive() && !this.isBaby() && !this.isChickenJockey() && --this.eggTime <= 0) {
         this.playSound(SoundEvents.CHICKEN_EGG, 1.0F, (this.random.nextFloat() - this.random.nextFloat()) * 0.2F + 1.0F);
         this.spawnAtLocation(Items.EGG);
         this.eggTime = this.random.nextInt(6000) + 6000;
      }

   }
   ...

If we look at the above class, we can see that chickens laying eggs simply isn't registered as a game event as the gameEvent() method is never called, thus not detecting this action as a vibration.

Potential Fix:

Simply calling the gameEvent() method where appropriate within this piece of code should resolve this problem. I feel as if a new game event tag would be expected to be used here as none of the currently existing ones seem to fit this action accordingly.