I'm playing as a wizard character and picked the talent Bonus 1st Level Spell, it worked fine until I hit level 5, which made it lost it's function.
As you can see from the screenshots below, insted of having 5 1st level spell casts I only have 4.
Funny thing is, Aloth does not have this problem himself.
I've tried reloading, restarting the game and the problem still exists. I don't have a recent save so it would be really great if you guys could fix this in the future patch.