Iron Golem constantly loosing line of sight when hit

When in survival mode a naturally spawned Iron golem when hit chases then stutters, looks away and stops for a brief moment even though it has a clear line of sight and no blocks obstructing it. But is seems that the glitch is more of a one off and less likely to happen and it only happens to certain entities. Also if you stand still once they catch up to you, There's a decent chance they will stop, forget and stare at you for 1- 2 second delay or until you move position before or after they hit you. This has been tested in different villages and other worlds which points to that this is probably an ongoing bug. 

 

How to reproduce:

1. Load a new world in survival mode
2. Find a village and punch a golem
3.  Let him chase you then stand still before he hits you

By chance he would stand still and stare.

Google Drive Video links: https://drive.google.com/file/d/1-u6XKUPZmameBXVQeP3znfhhSUOOvScX/view?usp=drive_link

https://drive.google.com/file/d/1VobJIrzJvnIuxYCDWSbzdcbDh580psl1/view?usp=drive_link