This bug is filed based on: https://github.com/IEuserAgents/UAIssueTracker/issues/67
The economist is having some serious issue with their webapp in Windows 8.1, but this is an issue in IE11 (on win8) as well. They have two text inputs (username and password) on the page. You can click on them with a mouse and type into the input, but if you touch the inputs, it receives focus (confirmed with css), but the input doesn't take text input from the keyboard, or allow you to select text. You actually have to touch the page outside the text input, then touch the text input again to be able to add text.