That doesn't seem to work either. If you right click and copy image address / open in new tab, the website opens and not the image itself.
Still seems to be working for me, with latest chrome on macOS.
Works fine in Firefox.
seems like google changed it to work now.
I think that used to happen on some sites with the button anyway. Not sure how it's implemented but it could be as simple as: append a querystring to image URLs, and if you hit the URL without the querystring, serve a page instead.