Thanks for your update and especially for the screen shots; very helpful. Your English is fine – much better than my Italian!
It looks like you are using the “Add Media” button in the post/page editor to display the Media Manager Modal (popup) Window, and the screenshot shows the bottom portion of the ATTACHMENT DETAILS pane at the right-hand side of the popup window. Is that right?
If so, the “Advanced options” (opzioni avanzte) section, “Title attribute of the image” (attributo title dell’immagine), and the “Modal image” control may be coming from your theme or another plugin – I do not have any of those displayed by my test system. Can you tell me if that is possible?
For example, the “Classe CSS dell’immagine” is not a normal WordPress element, but I can imagine it is created and managed by a lightbox, gallery or image management plugin. It is possible that the “attributo title dell’immagine” is a separate field, not the WordPress Title field, and so is not available to the MLA editing feature.
Thanks for any additional information you can provide.