We have a survey with a question "multiple choice". This question is mandatory and has an "exclusive option". In the survey you can use the "prev" button.
When you check the "exclusive option" all other options are disabled. So far so good.
When you click "next" and afterwards "prev" you can uncheck the "exclusive" option but the other choices are not enabled again. When you want to go on you get the error "mandatory question" ... .
After that all the options of the multiple choice question are available again.
I tried in the demoversion too with the same result.
This is confusing for respondents.
Is this a bug or shoult I change something in the settings for the question?