When I'm riding my horse in an extreme hills biome (we all know that horses can walk up blocks like stairs) and every now and then a weird invisible wall just apparently appears out of nowhere you cant see it and it stops you from going like a barrier block but it isn't. When this happens the monsters nearby weren't visually moving but they could still hurt me and they were like 7 blocks away on the screen and also since I couldn't go past a certain point of the weird walls a creeper blew up almost killing me, when I reloaded everything I was able to pass through just fine but it's really inconsistent. It would be annoying for that to happen again if I was galloping away to heal up, so please fix that!