Playback Issues - Audio/Video & Power

Help with audio & video playback issues, TV display type recognition & compatibility, HDCP messages, troubleshooting playback errors, advertisements, and resolving power issues.
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Level 7

Black rectangles on Home (Wallpaper) screen

On the home (wallpaper) page I am seeing black rectangles, almost like blocks of the image didn't download. When I go to a streaming service the picture is fine. This only happens on the home screen and can also be seen when the volume up/down display comes up. Any help is greatly appreciated.