Can't enchant friends PVP item in trade window?

[gagemcc]

I try to enchant a friends PVP weapon and he puts it in the not trade slot for enchants and I try to enchant his weapon and the trade window closes as the enchant finishes and is not applied to the weapon.

[StarCaller]

If it bugs like that use http://www.db.pandawow.me?item=38682

[Lektzz]

I guess it's not longer Lich King, you enchant the item with the crafted enchant item.