The bug
All other mobs rotate 90 degrees to the side when killed, excluding most arthropods which rotate 180. It'd be expected that squids tilt as well when dying, because other aquatic mobs like fish do, and it's not automatically obvious to see if a squid dies without waiting to see if it disappears. However, no tilting happens at all.
How to reproduce
Summon a squid or a glow squid.
/summon minecraft:squid ~ ~ ~ {NoAI:1b,Health:1f}
/summon minecraft:glow_squid ~ ~ ~ {NoAI:1b,Health:1f}
Kill them.
❌ → Notice how while it turns red, absolutely no indication that the squid is actually dying takes place outside of the redness lasting slightly longer than normal
Expected behaviour
The expected behavior would be that squids would rotate like all other mobs
Linked issues
Attachments
Comments
Please label it vanilla-parity.

This does not seem to be the case on Bedrock Edition:
[media]
In 22w15a and 1.18.2

Probably related to MC-115092 as both concern the rotation of the squid entity model.
In 1.20
In 23w31a
In 23w32a and related to MC-115092
Related to the squid and glow squid problem of MC-269775.
I am also able to confirm that this is an issue. Here are some extra details regarding this problem.
The Bug:
Squids do not rotate 90 degrees upon death.
Most, if not all mobs, rotate 90 degrees upon death (during their death animation), however, this doesn't happen with squids or glow squids.
Steps to Reproduce:
Summon a squid or a glow squid.
Kill it.
→ ❌ Notice how squids do not rotate 90 degrees upon death.
Expected Behavior:
The expected behavior would be that squids would rotate 90 degrees upon death.