Some mobs with small hitboxes may get stuck between campfires and fences

Some regular and baby mobs may stuck between campfires and fences. I noticed that while building farm for animals on my world. I tested some of them and they stuck between this blocks. Using food to attract them didn’t work and they only stare at player.

How to trigger it:

1. Create new world (superflat or void)

2. Build kind of cage (like in the attachment) using any type of fences

3. Place any type of campfire and extinguish it

4. Summon mobs that I tested (rabbits, chickens, baby cows, baby pigs, endermites, silverfishes, cats and baby sheeps)

5. Take animal foods and items that can attract mobs (or switch to survival mode for silverfishes and endermites)

6. Walk around mobs or cage and observe their behaviour.

Examples attached below.