Zombie Pigmen Attacks When I spawn in Nether

This issue has been a recent problem it has cost me a lot of XP levels and the risk of possibly losing my stuff is pretty terrifying. Whenever I want to go to go the Nether there is always a risk of getting attacked while loading, I am aware that is a current bug. But the bug that I’m reporting is basically this and also the fact that the pigmen are aggressive toward me. I don’t left click or anything to accidentally trigger the pigments aggressiveness. They randomly attack while in loading screen. I tried to close up the portal thinking maybe that might prevent any spawning but it still occurs.