I see the problem with your published site.
First off, the site loads very slow. You use PNG for images, that don’t need transparency and some of them are over 3 MB big. I strongly recommend to use JPEG for images without transparency and optimize all images (including PNG with transparency) for a file size lower than 1 MB.
Second, your read-only link does not work anymore (404). Could you repost it? I have noticed that the menu shows a strange opening behavior in the Webflow editor.
What I can tell from looking at your published source code: The menu link points to the homepage. I think the menu opens, but then the browser follows the link.
Removing the link href via developer tools works. The menu opens, the page does not reload.