Allowing user to miss a question in a quiz?

Hi again

Well I've been trying to fix my problem with this technique used in question banks....
So I copied a couple of questions from one of my 'real question' question banks and put them into a scene as individual questions along with my new  'daft trial' questions...and the review layer with the extra feedback shown only if the question was incorrect, works fine. I then put in a new Question Bank draw with the draw being those two same 'real' questions.... and the review extra feedback action doesn't work!
'mmmmn. So I then made a new question bank with a couple of the daft trial Qs, and then pulled them back in as a question bank draw. And the same thing - the review on the daft Qs which worked as individual slides, doesn't work when they are pulled from a Q bank...

Would someone else like to check out this concept for me? Any clues whether I'm just messing up something to do with Question Banks or whether this could even be a bug..... ?

Thank you!