minecraft:default_look_angle does not work

Build: 432497
Summary:
In the documentation that comes with the default behaviour packs, default_look_angle is mentioned to set the default look direction of an entity. Unfortunately nothing happens when using it.

Impact: While not game-breaking, it does mean all the turrets (Shulkers) for our upcoming Turret Defence map are facing the wrong way when placed and when not shooting enemies. Would be great if we could set them to face West instead of North for example.

Repro Steps:
add in:

minecraft:default_look_angle:

{"value":180}

to an entity's behaviour.

Observed Results: Nothing happens
Expected Results: entity should face South instead of North.