Roku 2 is showing a green box in the upper right corner. It sometimes flickers. It started about 6 weeks ago. At first it would go away once the programming started. Now it stays there all the time even when a program is streaming. I have rebooted the box and the problem is still there.
This box is not there when watching regular TV. The TV is a Vizio.
What does this signify? I see no answer to the problem in the postings.