Larian Studios Forums Baldur's Gate III Baldur's Gate III - Help Tips & Tricks Gale can't cast Chromatic Orb?

Okay, what am I doing wrong? I wanted Gale to have another option for lightning damage in this playthrough so had him learn chromatic orb.

I'm sure I'm just being dumb here, but I can't seem to cast it. The spell is in his spellbook, in his prepared list, and he has spell slots. But when I select Chromatic Orb and hover over any of the options it says "Spell is not Prepared". The screenshot below illustrates.

(Btw, when I squint really hard I can see that it has a tiny, tiny tick at the bottom right of its icon in the spell book, which some other spells such as Find Familiar and Magic Missile also have. I have never noticed this before, but wonder whether this means a spell was selected at level up rather than learned from a scroll? That's certainly the case for those other two spells, though I don't remember for sure for Chromatic Orb itself.)