Getting the same issue. Spend a perk to get the blueprint. Craft it once and the blueprint is gone.
Had a theory that maybe you can't craft it while you had some, but testing after i sold them all still left me with zero blueprints. Understandably you only need one. But it needs to be either...
It's been long enough that you've probably already figured this out, but you do not need the crafting perks to craft quickhacks.
That said, i know i and many others have the bug that when crafted once, the blueprint disappears.