This is a very annoying issue that seems to link a ton of class spells.
When you learn one, you get the entire bunch, and they cannot be unlearned, you're stuck with a ton of spells not belonging to your class each time you relog.
I tried learning Track humanoids here and I got almost every single hunter spell.
This also affects racials.
I accidentally learned the Druid track humanoid spell and the Hunter one, and now I can't get rid of all Hunter and Druid class spells.
I can unlearn them but upon a relog they're back.
While my Dryad has every demon hunter spell because I taught her double jump...