Pigman mechanics are broken beyond belief, they are (to my best understanding) supposed to only agro when the player deals damage to them, but as of now they agro if so much as something sneezes on them they agro. Blazes shots, snowballs, ender pearls, ghasts, iron golems, eggs, fishing rods, or ANY OTHER DAMAGE TYPE, will make them aggressive, aside from fall damage. This is annoying especially considering the ways of de-agroing them are broken too, one shot killing them is not reliable, even with smite and strength, leaving the area is impossible because they spawn in droves and rain from any possible ledge above you. Add this in with their insane attack damage and you get the only thing about Minecraft that isn't fun. The latter things are less of bugs and more of things that need immediate addressing, but the aggression mechanics are unacceptable in their current state.