thank you for the quick response. The problem exists since I believe the second last update of the Lay Theme but I don't think it has anything to do with the update either, because we work with the Lay Theme on other websites and there is no problem.
For this page I often use the stack element in combination with the horizontal line, text and the carousel. As soon as I put this combination together on the page, the elements start jumping or rather flickering. This makes it very difficult to work on the page. But it seems to have no effect on the front end. Everything looks great there.
I made a screen video if you want to have a look at it.