A number of Windows Phone users running Mango have complained about their keyboards performing a disappearing act and I can confirm that mine too vanishes on the rare occasion. An active thread is accumulating posts over at the XDA Developer forum with experiences and complaints. Microsoft has since confirmed that they are looking into the reports with a reply to a Twitter user who tweeted about the issue. Mary Jo Foley, of ZDNet, received a statement from the software giant:

Customer support is working with the individuals reporting changes to their experience. We are investigating these reports to determine the root cause of any issues users are having.

Have you come across this problem?

Source: Twitter, ZDNetXDA Developer forum, via: WinRumors