Actual render distance is 2 chunks lower than render distance setting

The bug

When the Render Distance setting is changed, the "view distance" that appears in the log is 2 chunks lower than the chosen setting.

For example, when changing the render distance from 10 to 9, this appears in the log: Changing view distance to 7, from 8.

This may be why the distance fog is not working correctly in 1.14.