When destroying a block while standing directly in front of it, the sound isn't centered on it. It seems that it depends on if you stand north, south, east or west of the block. The sound varies from a slight left, hard left, hard right and a slight right. The attached video shows this better.

Expected result:
The sound comes from the centre of the block.
**

Steps to reproduce:
1. Switch to survival mode.
2. Find a block (Preferably a loud block, like leaves)
3. Break the block and listen. Try from other directions.
Obviously, this only works with stereo sound on.

Affected Devices:
I have tested both Windows and iOS, and it affects both.