This is not so much a bug as a user interface issue for how well CDVR and tvOS play together.
We use HomeKit cameras as our baby monitors and pull them up PIP when watching with CDVR. In tvOS the normal behavior for PIP is that it shifts when user input moves to that section of the screen. In the case of the video player when the timeline bar appears from a pause or FFW a PIP in the bottom right or left corners will shift up so it doesn't hide the timeline bar. Typically in the navite tvOS video player PIP shifts back down once the timeline bar disappears. For the Channels video player PIP acts as if the timeline bar is present always keeping PIP closer to the middle of the screen instead of corner.
This appears to be an issue with how PIP is recognizing the timeline bar.