Summary:

In the bedrock version, below Y = -10 the edges of the screen darken slightly. This was reported in MCPE-121983. In the Java version, the edges of the screen do not darken below Y = -10.

Steps to reproduce:

1. Drop down to -11 height.
2. Look down.

Observed results:

The edges of the screen is not darkened.

Expected results:

Below Y = -10 the heights of the edge of the screen will darken slightly like in the bedrock version.

Image: