Shulkers hitbox doesn't scale with generic.scale

The Shulker hitbox doesn't scale when modifying their scale with the attribute minecraft:generic.scale .

Steps to reproduce:

• open a world

• use in the chat the following commands:

/summon minecraft:shulker ~ ~ ~ {Attributes:[{Base:3d, Name:"minecraft:generic.scale"}]}
/summon minecraft:shulker ~ ~ ~ {Attributes:[{Base:0.5d, Name:"minecraft:generic.scale"}]}