I just upgraded from 2.00+ to 2.05+ (manual update).
Since then, when I am on a specific page with no mandatory question, I am getting the alert 'You must fill...'. More strange, if a answer each question on the page, I still get the alert.
The page before this one, there were no mandatory question but LS showed me the right next page when I clicked 'Next' and no popup. But not on this one. Anyone got a clue?
It seems to be because of a question of type "Multiple choice with comments". If I change condition (so this question does no more appear), the problem do not show up again and I can go to the next page.
This type changed between 2.00+ and 2.05+ ?
PS: Of course, this question is defined as not mandatory
If someone else sees this situation also, here is the solution that we found: 2.05 introduced/changed default value for 'Remove text or uncheck checkbox automatically' which was then on 'Yes'.
Changing it to 'No' resolved the issue here: no more (validation) popup on survey.