When I punched a piglin by accident, it became hostile so I panicked and logged out and then when I logged in, the piglin was neutral to me even though it was hostile before I logged out. This happens to all aggressive neutral mobs like Wolves, Endermen, Iron golems, Zombie Pigmen, Bees and Piglins.
This problem has been fixed in the java version in 1.16 Pre-release 1 MC-4520.

Steps to Reproduce:

1. Mine gold ore/punch them/open a chest in front of Piglins.
2. Save and quit the game
3. Log back in

Observed Results:
It became neutral.

Expected Results:
Aggressive neutral mobs would continue to be hostile even after l logged.