Teleporting a shulker with Peek manually set causes it to close visually but not behaviourally

Summoning a shulker with the Peek NBT attribute manually set, and then teleporting it to another location, causes it to close visually. However, it still behaves as if it were open.

To reproduce:

# Either in empty space or with {NoAI: 1b} to prevent natural teleportation: 
/summon minecraft:shulker ~ ~ ~ {Peek: 100b}
/tp @e[type=minecraft:shulker] @s

# Observe how the shulker has closed but attempt to stand on it