My HD Channels are missing in both the Roku Xfinity Stream app (beta) and web browers (both FF and Chrome). With that said, I would suspect the problem is on the server side rather than an app / browser issue. Good news is that the HD channels are present on the MobileApp version of Xfinity Stream (Android -- I don't Apple iOS). If you use the Android Xfinity App to set up your Xfinity DVR channels, the recordings will show up on your Roku/Browser in HD. The HD channels will still be missing but you can get the recorded HD streaming to your Roku. Hope this help .. also hope that Xfinity can use this bit to issolate whatever issue is causing the HD to be removed from Roku and Brower interfaces.
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