Disappearing villager, studdery turning.

I was at spawn point when a villager appeared, in traded with the villager, to get items, I guess the villager offered me a Lama, i come back to spawn point the villager is not seen leading 3 lamas, but indeed leads floating where a villager was supposed to be swimming, so the ghost villager reappears and dropped the leads leading 2 or 3 lamas, I attach the leads from the lamas to poles, and returned to the villager who reappeared  who was then nowhere to be found, I come back to spawn point to find a totally different villager at spawn point who was leading 3 lamas, I guess this was supposed to be from training, when the villager then gives you lamas also from saving a village from a raid, hahaha, and there is shuddering when I turn to look around and it makes it hard to build.