Cant give chanter pet 2 weapons?

[Caravelle1]

I've been soloing recently, so I make the investment of 1-5k per night to buy proccing weapons for my pet. I use the level 55 enchanter animation, no matter what I do, I struggle to get the pet to equip both weapons.
Either giving them to it 2 at a time, or one at a time it ALWAYS seems to overwrite the mainhand and leave the secondary the enchanter animation sword.

I did some testing with rusty weps and could make them duel wield after giving it 4 different weapons one time, and then 2 the next. All these weps were primary/secondary usable. Anyone else have these problems?