Passive mobs run away forever on hit

Passive mobs used to stop running away from you after few seconds when you've hit them, but now they run away forever untill the world is reloaded.
I don't know about multiplayer, but this is definitely on singleplayer.

Steps to reproduce:
1. Spawn or find a passive mob
2. hit it once
3. Observe that it runs away from you forever
4. hold their specific food (I mean, for pig, hold a carrot)
5. Observe they don't care
6. Quit and rejoin the world
7. Observe that they are back to normal and will follow their specific food.