Off-hand weapon proficiency modifier bug

[EighthSin]

Whilst messing with getting double weapons to work on dnd4e.rpgame I noticed that weapon proficiency modifier is being applied to weapons equipped in the off-hand even if the character is not proficient with the equipped weapon.

Also does anyone know how to manually add weapon proficiencies to character.xml in the characters .rptok file? I can see where to add additional proficiencies but not what I not sure what I need to add. I understand that ideally this would be handled by the Weapon Proficiency feat and that folks are already musing about a solution to get that working.