I have found that I cannot go into the nether without Zombie Pigman attacking me. Even after dying, or even teleporting into the Overworld, they are still agro. I did find that they only attack you in the Overworld if they are chasing you, but not if they wander in. But even if i dont kill or attack the non aggressive Pigman in the Overworld, the Pigman in the Nether are still agro towards me.

I found the issue while on the realm and thought it was just a dumb realm glitch, but it also carried over to the download of the world and even a brand new world.

Not sure what's going on with the glitch, but no one seems to be covering the issue, so here it is. If you would like a video or whatever just contact me on the email for my account.
Thank You