Hi.
Recently ATT broke a little. It now shows recipes, that are impossible for me to learn, or unavailable in game at all. I believe around version 1.6.8 or earlier all these (except no.3) weren't in my list.

Thats what my cooking tree looks like in ATT now on my Horde Druid (v.1.7.3b, addon cache cleared, Shift+Clicked, BfA tree collapsed):

1. Three spells in Draenor Cooking, never made it to live. Spell IDs 169696, 169699, 169693.
2. Three spells in Pandaren Cooking - Grand noodle cart kits. Spell IDs 145170, 145167, 145197. Recipes removed from game, or never existed on live servers, not sure.
3. Ok, haven't learned yet.
4. Five seasonal recipes in Old World Cooking, Alliance only. Spell IDs 62051, 62049, 62045, 62044 and 62050. I have all their Horde counterparts learned.
5. Thistle Tea recipe, Rogue only. Spell ID 9513. 'Filter Items by Class' setting is on though.

This is due to some automation Crieve did for recipes. The downside is that it added every spell Blizzard has in your profession window, even if it's hidden.

One of the contribs one day have to sit down and go through all of the recipes and files and eventually fix them up.

Only no.4 is fixed as of v.1.7.6.
I still see all those removed recipes and rogue tea in cooking tree.

Most of these were fixed in commits 068f888 a1f8c88 d107357 0045151