minecraft.killed:minecraft.shulker_bullet scoreboard values do not increase when killing a shulker bullet

Bug description:

A scoreboard value tied to minecraft.killed:minecraft.shulker_bullet does not increase when a player kills a shulker bullet.

Steps to reproduce:

Create a scoreboard value tied to minecraft.killed:minecraft.shulker_bullet, then hit a shulker's bullet with an attack.

Expected result:

The scoreboard value increases by one.

Actual result:

The scoreboard value remains the same, rendering it no different from a dummy value.