storyline 360 Review Quiz displays incorrect on correct answers

Hello,

I'm having this same issue when I preview my not yet published course. It's happening with a new course I've recently created.  I set up a custom drag and drop interaction and the results show as incorrect.  I did check the slide properties to make sure they are set to 'automatically decide'.  The user will not be going back to answer questions.  Can you think of any other reason this may be happening?

Thanks!