This fix only applied to lava. The overlay fog effect now applies to the camera immediately. However this is not the case for water.
To reproduce
Switch to Creative mode and start flying
Use the following commands
/setblock ~ 64 ~ water
/tp ~ 63.39 ~
Switch into third-person mode
Start looking up and down
→ At some point you will see below the water without any tint
This has happened for a while now