There's two massive bugs with thrown weapons at the moment. First of all they can target into fog Secondly regardless of anything in the way, where the missile visibly stops, anything... they will hit their target. If you fire it at something in the back of a line of enemies, it will fire at the first enemy, hit them, then actually damage the targeted enemy instead. When firing into fog the position of the damage numbers / crit /whatever on-screen is completely wrong and shows on some tile that I can't find a pattern to. Seriously I've just fired at my diggle that I couldn't see through a wall, having it stop at that wall and then damage the diggle. EDIT: This is in the wrong forum, meant for it to be in general bugs as as far as I can tell it's not exclusive to the expansion.