Not quite a standard dysfunction but seeing as I am who I am it’s worth bringing up that, after all these years, we still aren’t 100% sure how Sha’ir spell retrieval and subsequent spell vanishing works. I have a entire thread somewhere on this site dedicated to explaining how they’re debatably spontaneous casters. That’s definitely a bizarre take and not something I want to launch into a debate about here but just the fact that a Sha’ir can be argued to function as a spontaneous caster, prepared caster, both, or neither is worth bringing up.