Chrome Version       : 49
URLs (if applicable) : N/A
Other browsers tested: N/A, this is for window capture with chrome.desktopCapture.chooseDesktopMedia(["window"])

What steps will reproduce the problem?
(1) Use Windows 10, Office 2013
(2) Open MS Word, create a new document.
(3) Capture the window with chrome.desktopCapture.chooseDesktopMedia(["window"]) and display it in a local video tag (alternative: install CrankWheel, http://bit.ly/crankwheelext, and screen share the window using CrankWheel to another tab).
(4) Input text into the Word window, highlight some text, move the mouse around.

What is the expected result?
All changes within the captured window should show up in the captured video.

What happens instead?
The changes within the document are not captured. They do however get captured if you capture the full screen rather than this specific window.

Please provide any additional information below. Attach a screenshot if
possible.

This is a report from one of the users of CrankWheel (www.crankwheel.com) that I'm submitting here after some research and after validating it is not a problem with CrankWheel itself. I find it likely this could be related to  issue 403703 , which is old but looks like it exhibited the same behavior. Assigning to tommi@ only because I know he's on the WebRTC team and will probably know who the right assignee would be ( issue 403703  was assigned to jiayl@).