Creakings cannot be angered onto a player without them first looking at the Creaking, this is due to the fact they are only activated when a player first looks at them.

Steps to Reproduce:

1. Spawn or find a Creaking
2. Don't activate the Creaking (don't look at it)
3. Enter F5 mode and approach the Creaking from behind

Expected Result: The Creaking, being a hostile mob, would attack the player on sight.

Observed Result: The Creaking doesn't acknowledge the existence of the player.

An image of me standing next to a passive Creaking in survival mode is attached below.