Hey, YOU let him out of the cage, YOU deal with his problems. ...
Okay, on a serious note, due to the game mechanics and rounding, etc, sometimes there are oddities in what the combat log shows and what happens. Worth noting but unless it's a critical game issue, not likely to be a pressing fix for the Developer.
But, seriously, did you think Adaon was going to be problem free? He robbed you in your sleep the first time he met you. He's going to rob wizards, try to black mail nobles, and yes, he's trying to hack the game (all bugs in the code are Adaon's fault, by decree of the Invisible Swamp Donkey).