The chicken spawn egg texture in Programmer Art is missing pixels that match the inventory slot background color

The new Programmer Art Chicken Spawn Egg textures is missing some of the pixels which had the same color as the inventory slot background.

This can be seen when hovering the spawn egg outside the inventory, or holding it.

The Cow and Ghast Spawn Eggs are not affected by this issue, despite also having exact color matches for the slot background.

To Reproduce

1. Load a world in Creative Mode on 1.21.5 Pre-Release 1.

2. Enable the Programmer Art resource pack.

3. Get a Chicken Spawn Egg from the Creative Inventory.

4. Hold the Chicken Spawn Egg.

5. Rotate the camera around in first person.

6. Observe strange holes in the Chicken Spawn Egg texture.

Expected Results

The Chicken Spawn Egg in Programmer Art is not missing pixels.

Observed Result

The Chicken Spawn Egg in Programmer Art has a few holes.