ToME: the Tales of Maj'Eyal

The weakness disease as depicted here states that it reduces strength by 15 and cause ~27 damage/turn. In the character screen it does not seem to affect current strength at all and actually causes 37 damage/turn (my character has 10% blight damage bonus) - this seems off somehow. The target is a cave bear with no obvious reasons for higher strength to make up for the 15 reduction.

edit: actually the strength reduction probably works - its just that target has strength bonuses I do not get to see - the damage is still off...