I did a little testing for a pigmen farm. I found that shooting a pigment from less than 20 blocks away won't even aggro it! Sometimes while punching a zombie piglin from behind slabs it just forgets about you and walks away. Zombie Piglins rarely share their aggro and it seems babies have a larger aggro range but I'm unsure. This happened both on singleplayer and multiplayer worlds. I did not test on my other devices. Z-Piglins are no longer dangerous at all and are hard to farm.
Thank you for your report!
We're actually already tracking this issue at MCPE-51161, so I will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – ✍️ Feedback and Suggestions – 📖 Game Wiki