Consider the following scenario:
You type text into the Search charm to search in a Windows Store app that uses the SearchPane.QueryChanged event.
You delete all text that you typed previously in the Search charm.
In this scenario, the app still reacts to a subset of the text that you previously typed.
To resolve this issue, install update rollup 2975719. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2975719 August 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about SearchPane.QueryChanged event, go to the following Microsoft website:
General information about the SearchPane.QueryChanged eventFor 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