Difference between Design and preview mode

tranduyngoc Unconfirmed, Community Member, Lectora® Accessibility Group (LAUG) Member, eLearning Brothers® Partner Posts: 5 ☆ Roadie ☆
Hi everyone, I have a problem and hope someone can help. I see the interface of my lectures when designing and when previewing there is a difference as shown in the image below. I was quite confused because I had to preview so many times to see if the layout of the lecture was correct or not. Has anyone encountered this situation before. Hope everyone will help. Thank you very much