when going back and Click many slide Unanswered questions on Quiz are not counted correctly

I've been having the same issue... Unfortunately I have not found a fix.

The workaround is to re-click each answer that is navigated. In short, before clicking Next always click an answer even if it looks 'clicked'

Another way around the error is to go to Publish Settings > Quiz: Settings and turn of the Submit All option. Of course, that causes each question to show correct and, optionally, incorrect messages before moving to the next question.

I think best  solution is for Adobe to fix this

You can turn off the correct and incorrect messages. My suggestion is turn off "Submit All" buttons and turn off messages for each question. You cannot have your users second guessing whether their responses are being correctly monitored.

You can turn off the correct and incorrect messages. My suggestion is turn off "Submit All" buttons and turn off messages for each question. You cannot have your users second guessing whether their responses are being correctly monitored.

@gtbetts Why turn off those message, could you explain how this would solve the problem of the OP, please? Turning off those messages (what about the Hint?) results in skipping the first step in the default two-step process of question slides.

Question Question Slides in Captivate - Captivate blog

Primarily I was responding to, "The workaround is to re-click each answer that is navigated. In short, before clicking Next always click an answer even if it looks 'clicked'." Of course it would be a difficult work around. A very confusing scenario for the learners. I thought ACGITech's second solution was much better.  That was to change the preferences so that the button was a submit button instead of "Submit All".

Lillybiri, I understand where you are coming from regarding the messages. My ears pricked up as soon as I realised you had concerns over my response. I respect your opinions and most definitely my comment was confusing for anyone to read. Thank you for the opportunity to explain what I had in mind.

Regarding the messages I was really just thinking that if the messages were not needed they can be turned off on each slide. An instructor/ designer may want to turn off messages in a summative task where feedback is often not wanted until after they have finished. At this point the learner can review the quiz.

In the case of formative assessments then you would definitely want the messages.

I really should have said this. The way I said it was very unclear.