Sorry, maybe I can't explain..

In fact, it's not a full screen mode, but full page instead popup (how can I post a screenshot?), and as I said, I can't close the page (the 'close' icon with the cross doesn't appear..)

I saw your screenshot, but I can't acces editing article as you did, clicking the vertical link on the left, I mean..

..and what about the gallery?

hi,
You go to prntscr.com/
download and ínstall lightshot. after press print, Use the left mouse select position images you need. and click upload, copy link and reply. Now, I can't understand your error. Because in my computer. It's working same images I sent you previews post.

Thanks.

here is it:

prntscr.com/4z6gft

hi,
You do the following picture
prntscr.com/4z6h0g

As I said, it doesnt work! editing page doesn't close, and nothing happens. And the same if I click on 'Salva'; after that, I must go back in the browser to end editing, but - of course - the article remains 'blocked by the user'..

You told that on your browser, all work fine? I tried on my pc with Firefox and Chrome, but nothing changed..