Claimed gold founder pack on destroyer, but can't use the weapon chest

I saved my second gold founder pack (the second one provided by Amazon after the situation with the EU server during the first weeks) and I claimed it yesterday on my newly created destroyer.
Everything was fine regarding the choice of the armor set, however I can’t open the weapon chest because the Destroyer class is not listed in the elligible classes !
I understand that a weapon chest already opened can be bound to a specific class, but this is not the case here.
Please tell me if this is a bug or if the lawmaker set will not be available for the Destroyer weapon at all.