Pigmen do not aggro on players even if the alarmed pigman has line of sight

This is caused by MC-154092 and MC-148600

 

 Expected behavior:

The alarm pigman should alert the pigman who does not have line of sight to the player that the player is there.

 Actual behavior:

The alerted pigman ignores the anger because he cannot see the player.

See: https://i.imgur.com/oXgcqNp.png