After the page is translated, the text is not always correct. Other translators have a "show original" button. But in firefox-translations, you have to refresh the page. This is not convenient, and leads to data loss in some situations.
Hey @grixa - there should already be a "show original" button that appears after you're translate a page. Here's a screenshot from a page I've translated from Spanish > English. After selecting the translate button again, a "Show original" option appears.
If that's not what you're looking for, or if you have a suggestion to improve that, let us know 😃