Here is an interesting question.
I have recently noticed that if you utilize the code
remove_meta_box('slugdiv', 'post', 'normal');
you are actually unable to modify the slug when you click on the url slug under the page title.
To clarify, when you use remove_meta_box for the slugdiv, the metabox and the screen options get removed however you are still able to click on the url under the post title to edit it... However, when you go to update/publish the post whatever modification you made does not take.
My objective is to remove the same metabox from the post edit screen AND remove it from the screen options page BUT I want to ensure that when you edit the slug under the post title that this still works.
Can anyone provide a solution to this problem? Thanks in advance.