Shulkers are spawned slightly mis-rotated after a shulker was hit by another shulker's shulker bullet

If a shulker is spawned after the shulker hit by a shulker bullet of the other shulker, the new one spawns slightly mis-rotated and is slightly not aligned to the grid.

To reproduce

1. Spawn two shulkers
2. Let one of them get hit by the other's shulker bullet
   → A new shulker is spawned that is slightly mis-rotated.

Screenshot with F3 + B