If I understand correctly, your rolls should be (against a L63 target as a L60 character without modifiers other than your spell book’s crit%):
91% Hit Chance
15.61-3=12.61% Crit Chance
14% Parry Chance
6.5% Dodge Chance
6.5% Block Chance - Aggrend did not specify this functionality in his posts. Mirayne noted a ~4.5% block
9% chance to miss
It seems like you’re correct that this may be a bug… I thought originally there was a roll to do miss, dodge, parry, hit first then do crit/glancing blows. I could be misunderstanding something, though.
Edit: for clarity, I thought (prior to this thread due to an incorrect memory) it was a two roll system. When I saidI might be misunderstand something, it wasn’t related to the immediately preceding statement. Sorry for any confusion!