Spectating a mob with a shader whilst having a carved pumpkin equipped turns the screen completely white

The Bug:

Spectating a mob with a shader whilst having a carved pumpkin equipped turns the screen completely white.

Steps to Reproduce:

• Equip a carved pumpkin.

/item entity @s armor.head replace minecraft:carved_pumpkin

• Switch to spectator mode. (F3+N)
• Spectate a mob that has a shader. (Creeper)
  →  Notice how your screen turns completely white.