If you have a child page selected as the current page in the editor and edit the slug of one of its ancestors via right-click on the page tree -> edit page settings then the path of the childpage (displayed on top-left and used in preview and publish) does not update to reflect this.
If you have a child page selected as the current page in the editor and edit the slug of one of its ancestors via right-click on the page tree -> edit page settings then the path of the childpage (displayed on top-left and used in preview and publish) does not update to reflect this.