Assume that you enter contents into an inner iframe element in Internet Explorer 10 or Internet Explorer 11. When you click the back button on the navigation, the page goes back without warning you first.
This issue occurs because the onhashchange event callback is not fired, and the inner iframe element goes back automatically.
To resolve this issue, install the most recent cumulative security update for Internet Explorer. To do this, go to Microsoft Update.
For technical information about the most recent cumulative security update for Internet Explorer, go to the following Microsoft website:
http://www.microsoft.com/technet/security/current.aspxNote This update was first included in security update 2969262.
For more information about security update 2969262, click the following article number to view the article in the Microsoft Knowledge Base:
2969262 MS14-035: Cumulative security update for Internet Explorer: June 10, 2014
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
See the terminology that Microsoft uses to describe software updates.