I'd noticed this a few times now and finally have comfirmation.
Where:
Primarily anywhere in the western outskirts zone
When:
Any time.
What:
Whenever yells are made or you hear a sound and you're given a direction, it is fully reversed from the direction it should be.
This was taken from near the inn when a shout was made near the gallows.
Recreate:
/yell in the outskirts
Ideas:
the compass for the yell command is probably flipped backwards.