Quiz slides sometime shows Prev/Next and not Submit

This is currently happening to me in Storyline 360. 
Using the Free-Form choose one slide type. 
I have a one question quiz that I am using to manage a compliance required affirmation statement. 

I am including a video of what is happening, but here is a summary:
The learner can choose "yes" "no" or "not" now and select the "submit" button. 
If they choose no or not now, they are given the option to go back to the question by clicking a "go back" button on the screen. 
when they go back to the question, the submit button is gone and "next" and "previous" buttons are in place. 

The next button has the same functionality as the submit button (it submits the response) if the learner selects an answer on the slide. 
If the learner does not make a selection, the next button takes them to the response page for their previous answer. 

If the learner selects "previous" it goes back the response page for their previous answer. 
HOWEVER, if the learner selects the "go back" button here, it jumps to the question page WITH THE SUBMIT BUTTON BACK IN PLACE (Like it should look). 

I am attaching the video (because this is an internal initiative, I changed the wording. But the behavior is the same) .