Description:

While swimming in one block high areas with solid blocks above the third person camera has a 1x1x1 black box around it (see screenshots).

How to reproduce:

Swim into a one high area with a solid block above and change your camera to third person.

Expected Result:

You can see the world in third person.

Observed Result:

A black suffication box like cube is created around the camera making it impossible to see anything.

Screenshots:

The screenshots show a simple setup with a one high area and a clear distinguishible block selection first with a solid block as ceiling resulting in a black box and second a slab as ceiling creating the expected result.