Mobs de-aggro After Punching Them

After a mob aggros onto you, then you punch the mob, it de-aggros for a short time. This appears to happen with all mobs except the Ender Dragon, slimes, magma cubes, ghasts, and neutral mobs with the exception of Endermen after initiating the staring behavior. Curiously, it also does not effect creepers, although they do experience MC-48532.

I've also noticed something peculiar about this glitch. If you hit a mob, and it de-aggros, then you hit the mob while it is de-aggroed, the mob with chase you as normal and will not de-aggro again after hitting it more. But, after hitting the mob, letting it de-aggro, and waiting for it to aggro onto you again, it will de-aggro after hitting it.

This may or may not be related to my other ticket, MC-48532.