Shulker no longer continue close or open when it hurt in the peaceful mode(Attacked by the players, snowman, iron golem, wolf or llama).
Probably because Shulker in the peaceful mode will still try to attack.
Linked issues
relates to
Comments


My bad. I forgot to hurt the shulker. My bad. Can confirm.
Can confirm in 21w03a.
Can confirm in 21w05a.
Can confirm in 21w05b.
Can confirm in 21w06a.
Cannot confirm. The shulkers I spawn are closing normally on peaceful in my world.