Shield animation problems, and generation of villagers in villages

Hello, I would like to report some errors occurred in the last snapshoot of minecraft nether update, it turns out that there were already problems in the animation of the shield but they continue to have them, you do instead of seeing the shield protecting you it moves a little and to solve it you have to remove it and turn it back to put, but still fails again and bothers enough. Also in the villages there are no villagers, the iron golem appears, and a professional villager, and sometimes a small villager in an entire village. I hope these problems are solved because the update is INCREDIBLE and I love it !! I hope you can solve it, kind regards.