Shulkers with NoAI are White

The Bug
When a Shulker is spawned with NoAI there shell texture appears white.

Commands Used
/summon shulker ~ ~1 ~

{NoAI:1,Silent:1,Invulnerable:1}


/summon (Mob) ~ ~1 ~

{NoAI:1,Silent:1}

/summon (Mob) ~ ~1 ~

{NoAI:1}