HBO Go (and Xfinity TV) not working correctly with Pipelight

Hi, I've been trying to use the method described here to watch HBO Go in the US. Unless the video is in full screen mode, I get a black screen and audio only. When I do change the video to full screen, video and audio usually won't rk, but playback controls disappear, there may be some video corruption, and oftentimes I caot exit full screen without killing flash in the terminal. Also, the video quality isn't that good.

I have a problem similar to this while using the Xfinity TV website. Black screen and audio only, until you resize the video to full screen. Then, unlike HBO GO, everything works fine.

I guess it's better than nothing, but am I the only one having this problem? Thanks.