Endermen do not teleport every time they are attacked with a projectile

When attacking with a snowball, the mob does not teleport to the available blocks (there are also inaccessible ones in the video. At that time I was checking which enderman can use). Instead of teleporting, the snowball breaks on the mob.

When attacking with an arrow, the mob also does not enter the teleportation state. To be a little more precise, the mob does not always teleport when in contact with an arrow.