What I expected to happen was...:
First of all, while you break a block it stays still. However, I was trying to break apart a double chest and the chest shook while I was breaking it. Unknown if this is intentional, but it seems wrong.
Steps to Reproduce:
1. Place a chest or double chest.
2. Break it. It will shake/jerk around while being broken.
Simplifying this ticket to the most prominent of the multiple bugs posted here. It is much easier for us to deal with bug reports when they contain only one bug. Feel free to create new ticket(s) with additional bugs.