On Samsung Galaxy SIII (4.3) and Amazon Kindle Fire HD (4.0.4), my game can be seen through in places that aren’t covered by sprites. I haven’t personally seen it with devices other than these, and I’ve tested at least 10 popular devices, but I’ve heard that this happens on BlueStacks as well.
As a precaution, I switched to the default render script and the default Android manifest for the above screenshot.
I was using the camera clear color to do the sky (as I typically do for pixel art games.) If I do the sky with a large sprite instead, the problem is ameliorated.