Are these bugs or just changes

When using Redstone circuits it used to pass through glass to a degree, this does not work anymore.

When farming sheep, once you remove the wool, it does not grow back, so I have bald sheep. 

Villagers are now stupid again, they do not go home in the dark. They just run around like idiots and get turned into zombie villagers again. 

Light used to stop mobs spawning in your home, this does not work either, I may as well not bother collecting so many lights lol.

This is all in survival, I have an issue trying to get a single press circuit to work, but it could just be me on this one so ignore this bit lol.