+2 weapon enhancement overcoming DR/alignment

[AKD-47]

Weapons with enhancements as low as +2 appear to be bypassing alignment DR, which per TT rules should only be bypassed by +5 weapons. My MC magus has a +1 dueling sword. If I hit a fiendish elemental with this, the -10 DR for fiendish (DR 10/good) is applied to the damage roll. If I enhance the weapon with my arcane pool, the DR 10/good is bypassed and only the DR 5/- is applied. Likewise, a character (not MC) with the Guardian's Axe (+3 adamantine weapon) also bypasses the the DR 10/good.

+2 weapon bypassing DR 10/good

+3 weapon bypassing DR 10/good

I tried disabling the DR rework in the mod, but this didn't alter the behavior.