Thanks for the advice everyone. You're right theuser86, it isn't an Android box but one running Android OS. I'm as green as one can be to this (we just cut the cable yesterday) so I'm still trying to figure it all out.
No other app has the black bar at the top, only Tablo, and then only in the Guide section. Once I choose a show to watch the black bar goes away. The picture below shows the black bar outlined in red.
We do have an NVIDIA Shield on our main TV but added this one to the TV in our bedroom. The NVIDIA Shield is awesome, albeit expensive!
Edited to say: As you can see the black bar covers up half of the top blue bar making it hard to get to the menu icon on the far left. You have to position the cursor just right on that one little white line in order to get the menu to show. It's frustrating.