Stepping sound loops when 2 or more players are standing on the same block.

If 2 or more players are standing on the same block the stepping sound will play on a loop.

If a player sneaks (hold shift) their stepping sound is muted but they will still be able to hear the other players stepping sound, as soon as they un-sneak their stepping sound will start up again.

The more people on the same block, the more stepping sounds you will hear.

This happens with all blocks including water.

How to replicate:

1. Stand on a block.
2. Have a friend stand on the same block as you.

Video of the bug:
http://www.youtube.com/watch?v=gjqbVnv9t30&feature=youtu.be

Tested on a vanilla server (no plugins)