Heads and blocks worn by small armor stands are stretched

The Bug:

Heads and blocks worn by small armor stands are stretched.

Steps to Reproduce:

1. Summon a small armor stand wearing a carved pumpkin by using the command provided below.

   /summon minecraft:armor_stand ~ ~ ~ {Small:1b,equipment:{head:{id:"minecraft:carved_pumpkin"}}}

2. Observe if the carved pumpkin is stretched.

Observed Behavior:

The worn head or block is narrower than it is tall.

Expected Behavior:

The worn head or block would keep its cube shape.