Roku streaming app fast forward - XFinity

When will I be able to fast forward using the Roku streaming app (beta version) while simultaneously viewing the frames, which display at speed? Currently the Roku Xfinity streaming app is blank while fast forwarding so it is not easy to know where to stop. With the Xfinity X1 remote, this viewing is enabled.

This question, "Roku streaming app fast forward," is about XFinity-Comcast TV Television Apps.

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