Can't close video screen on web interface (IOS)

When watching a DVR recording on my iPhone using the web interface, I can’t seem to figure out how to close the video pop-up screen and go back to the previous Channels DVR screen. When I first select the video, there’s a pop-up screen with an “x” in the top-right corner… but once I tap on “Watch Now” to actually launch the video, the “x” is no longer there. The only way to get back to any Channels DVR screens is to completely close the web page, then re-open a new instance of Channels. I’ve tried it using both Safari and Firefox.

iPhone 6s, latest OS

You have to click the Stop button that appears where Watch did.

Thank you sir:)