"lost" my maintained spells box

[Legollen]

I've been playing around using a new UI (Classic Vert), and I have some how lost the "Maintained Spells" box. I had a problem in which I had to change back to the defualt UI to remedy, and now that I have switched back to the Classic Vert UI, my maintained spells box has disappeared. Any idea how to force it back into my view?

Lego