The initial (or second?) frame of the output doesn't seem to have it's state updated correctly, because the sky gets darker without it re-printing the sky. This becomes obvious when other parts of the screen later update for different reasons, and reveal the sky colour difference. See the edge of the sun rays in the above picture.
The initial (or second?) frame of the output doesn't seem to have it's state updated correctly, because the sky gets darker without it re-printing the sky. This becomes obvious when other parts of the screen later update for different reasons, and reveal the sky colour difference. See the edge of the sun rays in the above picture.