Confirmed bugs/differences:
- Commands like /stop, /ban, etc are available in SP
- Piston-based T-Flip Flops appear incorrectly - Video - World download
- Pistons will occasionally appear glitchy as they extend. To Reproduce: Create piston-based clock, pulse some pistons with it for a while. After some time, you should see glitches appear. - World download
- SP GUI is indicative of being on a MP server, i.e. "Disconnect" instead of "Quit", "Logging In" while loading
- Glitched-head pistons. To Reproduce: Create and use instant wire. - Screenshot of result - World download
- Piston elevators break in MP - World download
- The Nether doesn't generate properly - Video
- When lighting a portal, fire appears for a short time until the portal blocks are created
- You can't see if it's thundering or not (without looking at the thunder, of course) editor's note: I assume "thundering" should be "lightning"
- When entering or leaving the Nether or End, the client doesn't display "Entering the Nether" / "Entering the End"
- Bonus chests are not generated
- On MP, buckets will occasionally show lava in them when there isn't any lava in them due to clicking too fast while picking up lava
- On MP, if you log out when your head is directly under a solid block, the game will occasionally teleport you on top of it when you log in
- On the new SP, when making a world in Creative, you don't spawn with items and you can gain experience
- In MP, the world doesn't save when you hit 'Escape'.

