This issue occurs when you change the emulation resolution in F12 tools for Internet Explorer 11 on a Windows 7 based computer.
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.