Ever since the AI changes with the Pillagers and Villagers (along with raid changes in 19w13a), it seems to have affected all the AI of the mobs in the game.
Usually the mobs look at you when they are following/hunting you, instead they will look in the skies for a little second and then look at you again.
Even walking are a bit weird. They will go from right to left when it's going down or up a block.