User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:126.96.36.199) Gecko/20090824 Firefox/3.5.3
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:188.8.131.52) Gecko/20090824 Firefox/3.5.3
Steps to Reproduce:
2. Set the iframe's src attribute.
3. Navigate to another page inside the iframe.
5. Try to use the back button.
The page does not go to the previous page, no matter how many times you click the back button.
The page to go to the previous page.
A workaround for website creators is to leave the iframe on the page. Multiple back button clicks are still required to get to the parent's previous page, but it works.