When in preview mode - the right sidebar does not disappear - also, scrolling stops working - thus freezing the page - although clicking and links still work.
For some reason, I think it has to do with legacy interactions - sometimes when I’m applying legacy interactions, the screen goes white and i have to refresh the page. but it might not be.
The screenshot below shows the preview mode. You can see how the elements are hidden under the right sidebar - this does not happen on the live site. It’s a preview mode issue.