Yes, it's a bug, it will be fixed.
Ah, this makes me feel better. Hopefully it's correct. I started the game by making a warlock, which felt really fun and powerful until I learned that the wizard can essentially learn 100% of the same spells, except for eldritch blast. In the game's current state, I can't glean the advantage of having a warlock over a wizard. And if eldritch blast is really the only defining feature of a warlock, that's pretty disappointing.
As of right now, is there actually any advantage to choosing a warlock instead of wizard? To me it feels like a warlock is just a wizard with far fewer spells slots, and one different cantrip (eldritch blast).