Did knowledge point respec last week, today purchased non-spec recipes unlearned suddenly.
So I did a knowledge repec last week to tune a few alts, after buying Concentrated Silvermoon Health Potion recipe. Crafted it on my respecced toons a few times. Everything was good until this morning, when the respecced toon lost that recipe. They didn't lose any other bought recipe (like Amani Extract). Bug?
EDIT: 3 out of the 4 alts have had the recipe restored after a minor download today, not sure what's up with the 4th.