Baldur's Gate : The Sword Coast Chronicles : NWN2 Persistent World

I have two different PC's with sneak dice/death attack dice which have recently become able to come out of stealth from really far away from enemies (off screen from top-down view/slightly tilted and farther). These are not archer sneaks, they both use melee weapons and are somehow triggering sneak attacks when they are not even in sight of the enemy yet. Doesn't happen too often, but has happened three times in the two times (approx 3 1/2 hours) that I have played this week.

Needless to say such a bug is quite OP as it takes the risk out of leaving HiPS to attack an enemy when you do so where they cannot see you.

Happens to me as well sometimes, unexplicably, melee attacks from a screen away. I doubt there is anything to do about it though.