Squid / Glow Squid hitbox doesn't match its model

The Bug

The squid or glow squid hitbox doesn't properly match with its model.

Steps to Reproduce

• Summon either a squid or a glow squid.

  /summon minecraft:squid ~ ~ ~ {NoAI:1b,NoGravity:1b}
  /summon minecraft:glow_squid ~ ~ ~ {NoAI:1b,NoGravity:1b}
  

• Enable entity hitboxes. (F3 + B).
• Take note as to whether or not the lower body and tentacles of squids are included within squid hitboxes.

Observed Behavior

The lower body and tentacles of squids aren't included within squid hitboxes.

Expected Behavior

The lower body and tentacles of squids would be included within squid hitboxes.