Consider the following scenario:
You have a Lenovo ThinkPad S1 Yoga computer that runs Windows 8.1, and the Allow the screen to auto-rotate option is selected under Screen Resolution.
You put the computer in Tent mode.
You click the user account picture on the Start screen to sign out.
In this scenario, the orientation option is reversed at the logon screen. Specifically, the orientation option is changed from Landscape (flipped) to Landscape.
Windows 8.1 and Windows Server 2012 R2 update information
To resolve this issue in Windows 8.1 and Windows Server 2012 R2, install update rollup 2919394. For more information about how to obtain this update rollup package, click the following article number to go to the article in the Microsoft Knowledge Base:
2919394 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update rollup: February 2014
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates