When a minecart is on top of a turtle egg cluster, the eggs start breaking.

When you crouch as you walk on top of the eggs however, they remain fine. But in this state you're even taller than the minecart and supposedly only tall mobs/entities should be breaking eggs.

How to reproduce:

• Place a couple of turtle eggs in the same blockspace (or breed turtles to do that)
• Press and hold the crouch key, and walk on top of the eggs
  Notice the eggs won't break

• Now walk off, and drop an empty minecart from a rail above onto the eggs
  Notice the "weight" of the minecart starts the eggs to break one after the other as it remains on top