Block cracks don't appear on the lower halves of doors when zombies are breaking them

Is this still a concern in the latest Minecraft version 14w04b? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

Confirmed for 14w21b.

Confirmed for

• 1.8

Confirmed for 1.8.8.

Confirmed for 1.9-pre1. The zombie can still jump and hit the top of the door (Playing sound effects and showing cracking), but can't destroy it in the brief moment that it's in range.

Can confirm in 21w17a.

Can confirm in 1.17.

Can confirm in 1.17.1.

Can confirm this in 21w44a. Here are some extra details regarding this problem.

The Bug:

Block cracks only appear on the upper half of doors when zombies are breaking them.

Steps to Reproduce:

• Ensure that the difficulty is set to "hard" and the "mobGriefing" gamerule is set to "true".

/difficulty hard
/gamerule mobGriefing true

• Build the setup as shown in the attachment below.

• Whilst standing on top of the diamond block, summon a zombie that is able to break down doors.

/summon minecraft:zombie ~ ~ ~ {CanBreakDoors:1b}

• Stand on the opposite side of the door as the zombie, switch into survival mode, and get it to notice you.

• Once it begins breaking the door, look at the lower half of it.

• Take note as to whether or not block cracks only appear on the upper half of doors when zombies are breaking them.

Observed Behavior:

Block cracks only appear on the upper half of doors when zombies are breaking them.

Expected Behavior:

Block cracks would appear on both halves of doors when zombies are breaking them.

If you, as the player, break a door, the breaking animation only displays on one half. So, I fail to see why it should be any different when a zombie destroys a door.