The Bug:

Allays can pass through walls client-side as a result of them not colliding with entities properly.

Steps to Reproduce:

• Summon a hollow box around yourself.

• /fill ~-2 ~-1 ~-2 ~2 ~3 ~2 minecraft:glass hollow

• Summon around fifty allays within the box.
• Allow the allays to collide with one another and watch closely as they do this.
• Take note as to whether or not allays can pass through walls client-side as a result of them not colliding with entities properly.

Observed Behavior:

Allays do not collide with entities properly resulting in them being able to pass through walls client-side.

Expected Behavior:

Allays would collide with entities properly and not pass through walls client-side.