Hmm, I know that would concern me just the same. Taking a quick look we're not seeing any known reported issues similar to this after the update. What exactly seems to be going on? Is the browsing option not available or when attempting to use do you receive an error message?
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If I am watching a video on my browser as soon as I use screen casting to move it to my television I lose my video playing on my browser its as though the screen casting stops my ability to connect to the internet.