Shulker shell can rotate while riding an entity

The Shulker's Shell With AI Can Rotate While Riding An Armor Stand

How to reproduce

1. Summon Shulker Riding An Armor Stand

   /summon minecraft:armor_stand ~ ~ ~ {NoGravity:1b,Passengers:[{id:shulker}]}
   

Observed Behavior
The Shulker Shell Is Rotating.

Expected Behavior
Shulker Shell does not rotate while riding entities.