Comment 4 for bug 116085

Your comment doesn't make sense Kieran. Do you mean "until anyone can confirm that *not* using the cached copy is definitely a Bad Thing"?

The OP clearly explains what they want. Some modern websites have the unfortunate feature of not changing the URL when navigating to a new page, so if you refresh you go back to the home page. I have experienced this myself. This is probably due to 1) frames, 2) AJAX-y sites using DOM manipulation.

So what the user wants is not the cached copy of the current URL. You want an exact duplicate of the entire state of the current tab. OTOH I can see that that's difficult, and _good_ AJAX sites use hacks to change the current URL for the purposes of browser history and bookmarks.

As a third use case, there's HTML forms. You know, the "refreshing this page will resend the form" warning? Though TBH, duplicating such tabs is not something one would want to encourage.