No, character sheet is not glitchy. Spell indeed adds just +1d8 fire damage. Previous revision was correct. P22 08:21, 28 June 2009 (UTC)
In damage testing it did greater than 1d8 fire damage per hit.
Forgot to add Mictlantecuhtli
Test it again. Current version of NWN2 (patch 1.22) in script for Flame Blade (x2_s0_flmeWeap.nss) has these lines:
itemproperty ipFlame = ItemPropertyDamageBonus(IP_CONST_DAMAGETYPE_FIRE, IP_CONST_DAMAGEBONUS_1d8);
IPSafeAddItemProperty(oMyWeapon, ipFlame, TurnsToSeconds(nDuration), X2_IP_ADDPROP_POLICY_REPLACE_EXISTING, FALSE, FALSE);
Which clearly shows what this spell does. P22 16:31, 30 June 2009 (UTC)
Maybe the combat log is bugged then, it said it was dealing anywhere between 3 and 14 fire damage on average. I just checked again and you can cast it on a badger empowered and the damage ticking by over the enemies head jumps more than eight points also. There's no need for me to retest it further, unless the combat log is tied into the visual numbers over an enemies head? In which case I could see them both being wrong. Mictlantecuhtli 17:06, 30 June 2009 (UTC)
Empower doesn't even do anything for this spell, as shown in script. Not used at all. As for damage, have you checked if values above 8 happen on criticals? P22 06:00, 1 July 2009 (UTC)
Just tested. It never ever did more from 1 to 8 fire damage, even on criticals. Also, spell description inside game mentions 1d8 bonus (I think it was updated in one of the patches). P22 06:09, 1 July 2009 (UTC)
Actually, at least with 1.22 patch, probably for some time before that, description does state that it adds +1d8 fire damage. So it is correct.
P22 22:25, 1 July 2009 (UTC)