Conventional weapon breakthrough interacts badly with Psi Amps

[pledbrook]

This actually affects any conventional weapon that ignores base damage. Basically the preview damage includes the breakthrough's +1 damage, but the actual application of that damage does not. So there's an inconsistency from the player's perspective.

The following LWOTC save demonstrates the problem:

save_BUG Soulfire preview incorrect.zip

Soulfire damage preview says it will do 5-7 damage, but in fact it will only do 4-6.

The offending code is in X2Effect_BonusWeaponDamage, which seems to deliberately treat the actual damage differently from the damage preview. There seems to be no valid reason for it to do so.

[Xymanek]

While the save isn't hugely relevant here, in future try to use vanilla (no mods, only CHL) saves as that makes it much easier to others to check them

[Xymanek]

A possibly relevant thing: in ABB (non-TLE) there is a perk that increases damage from secondary weapons and you can put psi amps on anyone as a secondary weapon. I tested the interaction and afaik it does increase the damage of null lance

[MrNiceUK]

Null Lance has bIgnoreBaseDamage set. More likely, that ability simply doesn't use X2Effect_BonusWeaponDamage.

[Iridar]

1284 that "fixed" this issue caused another bug and was reverted, so I'm reopening this issue.