3 Bugs - Villagers e Spawn

1 ° - Some villagers are not losing their professions by breaking the item that gave them one.

2 ° - Villagers are disappearing when entering the nether portal. they don't appear on the other side, they just disappear.

3 ° - some mobs are disappearing quickly when I die, or I just leave for a few seconds. This bothers a lot depending on the mob.