Hi @Darius_Safavi, thanks for your post, this is an open bug behavior when you are using the CMS editor and are logged in to the Editor, it does not appear for regular site visitors.
I do not have a timeline for the issue, but this happens when you have your pages set with a 100vh height, you might try to use 100% height or auto height instead with the body set to 100% height instead of using vh.
I cannot give you a timeline for the fix for this behavior, but when that is updated I will make sure to update this post.