If you had 2 craft missions of the same level, activating both of them would result in only one instance of the mission appearing in the journal, the other would be lost with no warning or other suitable mechanism. This awkward state has always been the case with crafting missions, and could be WAI.

Crafting SCHEMATICS, he said.... and he's right... i've also seen each of those bugs during a 2 hour play today.