The document title of the "post new" screen should be Add New {Item}

[imath]

When adding or editing a post now the Gutenberg's project editor was merged, the first part of the document title is always "Edit Post" ($post_type_object->labels->edit_item).

Below is a screenshot of the post-new.php screen :

When adding a new post, it should be "Add New Post" ($post_type_object->labels->add_new_item)

Below is the same screen's screenshot with the attached patch applied :

[TimothyBlynJacobs]

I think it intentionally doesn't do this?
​https://github.com/WordPress/gutenberg/issues/3702

[imath]

Oh ok i understand why ! As there's no page reload when a post is saved, the choice was to only use "Edit Post" to avoid playing with the document title on the client side.

Thanks for the link @TimothyBlynJacobs