I bought all the gossamer insignia recipes (Carrion, Cleric’s, Explorer’s, Berserker’s, Valkyrie, Rampager’s, Knight’s) from the tailoring vendor and learned them before I was able to use them. They never have shown up in my crafting list. I assumed that it was because my crafting was too low level to actually be able to use them.
Now my tailoring is at 400, and the gossamer insignias still do not show up in my crafting list. When I go to the master tailor vendor and mouse over the insignia recipes, it shows that I know them all and it will not let me try to learn them again. It looks like there is a bug with the gossamer insignia recipes that is preventing them from showing up in my crafting list.