Thanks for posting to our Forums!. I do apologize for this issue you are having with the Logitech Revue and how the key board works.
I do believe that the issue is with the SlingPlayer application version you have on the Logitech revue. Meaning the Logitech Revue is no longer sold, the SlingPlayer application is not being updated. This will cause issues like the one you are having
Below is a Link to an article that may help as well.
Hope this helps!
The Sling Media Moderation Team