[Trexmaster]

Back-attacks on mobs seem to proc on their sides, and their back.

I haven't tested it yet, but, I imagine the same goes for players.

EDIT: I have tested it. Yes, it applies to players. Oh the pain.

UPDATE: It seems getting bumped from your back diagonals causes the player to get the back attack instead.

[Neus]

This has been corrected. Not sure I understand the last bit though.

[Trexmaster]

To clarify, a monster moving into -you- can give you the back attack (as in you get the free round, not them). I can't seem to reproduce it beyond having one person in my party to stand behind me, and waiting for the monster to approach me while I face north.

I've had it happen while facing other directions, so, I'm not entirely sure which parts of the monster/player are causing that to happen.

I'd imagine this fix should stop that from happening, though.