Each time Wordpress "improves" the editor it makes something worse.The view page link now shows an overlapping preview instead of a page. There's already a link for that. There are two workarounds: (1) Use the back button on the browser and refresh. But this closes the edit page. Very annoying and time-consuming. (2) Open the page or post in two tabs. Use one for editing, and refresh the other one after you save.