Spell tips not showing in combat

[Spankthetank]

Ok I'm one of those people who gets lost in a paper bag, so I rely on my spell tooltips especially when learning a new class. With nui, I havent been able to see the tips displayed while in combat. I've gone thru everything in my interface options and went down the list to see if it was somehow disabled. I've also been searching the forums, but so far havent found anything helpful on the subject. Any suggestions?