zombie pigman in 1.16

I went into the nether for some blaze rods but then i ran into a zombie pigman. I have no idea if the texture went wrong or the game just got weird. I also tried to explore the nether to try and find the zombified piglin but all of them (I think) turned into the old zombie pigman) So please fix this. I also tried restarting my phone and the game to see what happens but nothing did. the pigmans are still here and the zombified piglins are still gone.