I just logged into my Minecraft survival world after the recent bug patch update on bedrock. While using my max crossbow (unbreaking 3, multi shot, mending, and quick charge) along with instant damage 2 arrows so far skeletons and zombies will not die to it. They will die to the arrows when using a regular bow but for some reason it just flicks off with the cross bow. I  tested a few other mobs, creepers die to them and along with sheep, cows and pigs. So far it’s just zombies and skeletons that will not die to the cross bow and arrows.