I'm not sure anyone reads the Call of Cthulhu thread in the "Character Sheets and Compendium" section but a bug has been uncovered in the "official" Roll20 Call of Cthulhu character sheets for both PCs and NPCs: Roll20 is adding a "damage bonus" roll to the damage when there is an "Extreme Success" with an impale weapon. The correct formula is: Maximum Weapon Damage + Maximum Bonus Damage + Weapon die roll Roll20 is doing, incorrectly: Maximum Weapon Damage + Maximum Bonus Damage + Weapon die roll + Damage Bonus Roll The damage bonus roll is incorrect.
