I've just completed Kingmaker for the second time and noted there is still a particular bug with the Lantern King's Curse. I didn't see it mentioned in the 1.1 beta patch notes, so I figured I'd point it out here:

As you progressively lift the curse, it is supposed to allow for more spells for your casters. I'm fairly sure that this is not working 100% as intended.

In the image below note that I'm at least restrictive stage of the curse. The selected character and spell list is for Harrim - who at level 17 has up to level 9 spells available. However, as the image shows only up to level 2 spells are available (even though the curse text indicates that all but the most high level spells should be available).