Upon logging in today, I was missing “Teleport: Shattrath” and “Portal: Shattrath” from my spellbook. I had another Mage portal me to the city, and I was able to re-learn them.
Just reporting it here as it’s a weird issue.
I’m also running into the same issue
In fact, I was missing all of my portals for Draenor, BFA, and Shattrah. I had just used Shattrah and they suddenly vanished - I had to repurchase all of them which was wild. I LITERALLY used Shattrah moments before, during the timewalking raid post-Illidan kill, and went to Boralus to check on mounts XD.
I just logged into one of my lower alts to do HH dungeon and her action bars with spells use to be were wiped out completely …I had to drop the que before it went off and fix my action bars on the character…hope my dang main isn’t like that when I log onto her soon.