It is not possible to refresh the session once the captcha is shown.

Given I have not logged in
And have edited
When I try to save
Then I get a captcha

Now, try to be clever and log in

Given I log in in at another tab
When I try to preview to refresh the session
Then I should be shown the preview

What happen now is that the page refuse to reload and I'm still being shown the save prompt. I believe it is the captcha code that blocks preview.