In my current game, I have no more spells to research. I know this because the "chose a new spell" page is coming up blank, each time I reach a lore milestone.
The problem is, I am certain that I haven't learned all of the available spells (or those that should still be available to learn)
For example, I never chose sacrifice, so it should keep on popping up as an available spell to lean, ...until I choose it.
However, even that spell has disappeared from the list of available spells to lean.
Is there a limit to how many spells the sovereign can learn? Does the sovereign need to reach a specific level before being able to add new spells to his spellbook?
If it were a bug, I'm sure someone would have reported it by now, so I must be missing something.
I'm confused.