While watching a recorded program on the Stream+, if you open the 'Guide', the video for the recorded program disappears and there is a black screen and spinning wheel seen through the translucent Guide graphic and also if you exit the Guide. After about 30 seconds, the audio goes out too. The black screen and spinning wheel will continue until you press the 'Back' button twice and then press the 'Home' button.
This is a known operational inconvenience that may or may not be changed by a future software upgrade.
To avoid this issue, you must press the 'Back' button while you are watching the recording to exit. Then you can open the guide or any other function.