Has anyone noticed that learning recipes has been broken since the tree patch?

I learned about 20 or so new weaponsmith recipes on 120ish attempts before I ran out of wood two nights before the tree patch. Since the patch I've collected more wood and metal and went through 60 attemps with zero new recipes learned! I only have 37 total recipes now, and none are shovels or picks, so I know I don't have all the recipes yet.

So, is learning recipes broken or just made harder?