Issue with 'ticks' disappearing from the design quiz settings causing modules being unable to be completed by staff

thanks for your reply Joe, it happens across multiple modules which most of them have multiple quizzes and it usually happens for the final results slide. and randomly as I said. I wondered if it was when we reviewed a module and changed info in the quizzes? Not sure that I would be allowed to share the info and I can't predict if it might happen on a unit or not. Thank you