Legendary weapons "Midnight blade" has some problems

[Tude]

Hello ! I don't understand why Midnight Blade has extra damage vs cold but it has electric spell.

This means that you must add an cold gem for the passive to work. Or that you have to use consumables but it’s not very efficient...

Is this an error ?

Moreover, Midnight’s blade Lightning Sweep and Piercing Dodge do not damage enemies if they are staggered or if they just finished their combo.