The recipe in the journal for both of these quests shows the incorrect recipes.

Clothcraft 36(A Fruitful Murder) Luxurious Gloves recipe:
Undyed Velveteen Cloth + Cotton Yarn + Thanalan Spider Silk
but quest journal shows:
Undyed Woolen Cloth + Cotton Yarn + Thanalan Spider Silk

Leathercraft 36(Head of the Class) Toadskin Jackets recipe:
2x Toad Leather, 1x Aldgoat Leather, 1x Diremite Sinew
but quest journal shows:
a handful of steel rivets, two circles of toad leather and a steel ingot(which makes toadskin armguards)

I'm guessing the alternative items that can be requested may also show incorrect recipes. Also, the leathercraft quest is prone to freezing when attempting to turn in the finished item.